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Oust All Purpose Descaler

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£2.29 Best Offer by: robertdyas.co.uk See more offers
19 Reviews

Brand: Others / Type: Descaler / Category: Cleaning & Disinfectant

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    19 Reviews
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      10.06.2013 15:16
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      Good product, but should be used as per the instructions.

      Where I live, the water is so hard you could practically cut it with a butter knife. You can see limescale build up and it does kill kettles in the long run and cost more electicity and make horrible tea and coffee in the meantime. The only treatment to reduce these problems is regular de-scaling. My new kettle had reached the Must Descale Stage, so I bought something I knew would work - having extended the life of my old plastic kettle by several years.

      I bought Oust.

      It is idiot proof if you read the instructions. Fill the kettle half way, boil, place in sink and pour the contents of one of the three sachets you get in slowly. This froths up a bit and you leave for ten minutes before rinsing, boiling and rinsing again.

      However, I was that idiot who did not read the instructions, having used the product before and being stupidly over confident.

      I can tell you that if you pour the sachets into the half full kettle and then bring to the boil it will froth like a 1960's Doctor Who monster special effect. Then you will end up tossing it into the sink, spilling the boiling hot nasty stuff all over the kitchen worksurface, the floor and your hands and feet. You will then spend the next ten minutes throwing your entire stock of dry towels over the wet surfaces and washing off your hands and feet under lots of cold water. Followed by wondering where the world's largest and least wanted collection of tea towels have gone. Then pilling the wet towels into a bucket so they can go into the washing machine later this afternoon.

      I have now done a second sachet and done it properly and my metal kettle is now gleaming and pretty again. The limescale in both sheet and clump form is gone, as per my previous experiences with Oust.

      This product does work and does work well. You get three plastic sachets, which you cut open and pour. This avoids the problem of measuring out harsh chemicals which you get from bottles of descaler. The cardboard box has instructions on, just in case you don't read the ones on the sachet.

      You can buy this product at all the main supermarkets as well as at Amazon. I got mine for £1.50 from the big Tesco. It will set you back £2.15 at Amazon.

      It is also important to have the windows open while using this product as it will produce fumes. This is especially important for those os us with asthma. I made another mistake there and did not and had to take my inhaler as a result.

      Learn from my mistakes and you won't regret it.

      Follow my idiotic mistakes and you will still get a lovely clean kettle but you will also get an awful lot of washing and a pig of an asthma attack.

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        08.04.2013 17:07
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        Fantastically simple way to remove limescale build up.

        Happily I live in a area that has 'soft water' this is great for me as most of my water using appliances die a Tracy induced death before limescale builds up enough to do any harm.

        I have only ever needed to descale my kettle once or twice in the last 18 or so years that I have been the owner of kitchen appliances, rest assured I have got through many kettles in this time but only a few have lived long enough to accumulate limescale.

        When I have needed to descale, my descaler of choice has been Oust All Purpose Descaler. I brought my last pack of Descaler from Wilkinson's for less than £2. The pack contains three plastic sachets of descaler, and the descaler is suitable for descaling irons, coffee machines, kettles and shower heads. As I have only ever descaled my kettle this is what I will be discussing. Full instructions for descaling irons, coffee machines and shower heads are clearly given on the back of the packet.

        Having been suitably terrified by the safety warnings on the back of the pack (wear goggles and face mask, irritant to skin etc) I set about descaling the kettle. I filled the kettle half full (or empty, depends on your outlook to life) with water and brought it to the boil. I then lifted the kettle off its swivel base and added the bright blue contents of one sachet and left it for ten minutes. The descaling liquid has quite a chemical smell so try to avoid sniffing it. I checked how the kettle was getting on after ten minutes, all the scale appeared to have been dislodged, and if scale still remains we are advised to heat the kettle again but not to boil. I tipped the water down the drain and then filled the kettle and boiled it, discarding the water afterwards, I gave the kettle a good rinse out and boiled and discarded kettles of water a good few times before I made myself a drink

        I was very impressed with how well Oust All Purpose Descaler worked, it was quick and easy to use and removed limescale without me having to put much effort into the job, therefore it ticked all the boxes in my easier the better approach to cleaning.

        Thank you for reading.

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        16.10.2012 21:45
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        Fantastic product!

        I have used this on my Iron and Kettle so far and have been very happy with the results!

        I have been especially pleased with the affect it had on my iron. I have recently found my iron sticking to clothes and leaving black marks even though it was full of water. I was actually getting to the point where I thought I may have to throw it out (as the plate was also black and stained).

        However, I followed the instructions for Oust and poured the solution into the water chamber of my iron and topped up with tap water. I then plugged in the iron, turned up the heat and held the steam button down as advised until the water chamber had emptied (this steamed the house up quite a lot and the smell was slightly offputting). After this, I put in some fresh water and ironed a TShirt to test...WOW. I think I had forgotten how a steam iron was supposed to work as the steam was coming out much stronger and the iron glided over my clothes no problem. FANTASTIC result.

        As for my kettle I topped up the jug I had used to pour the solution in and used it to top up the kettle and boil (this was more to use up the leftover rather than waste) and even this small amount cleaned the inside of my kettle to a good standard.

        I would definitely recommend this to anyone looking to freshen up their iron or kettle (I can't recommend on anything else) especially where the water in the area is "hard".

        For 3 sachets it is £1.50 so 50p a sachet. I think it is definitely worth this as you could use a sachet to de scale a couple of items every few months.

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        16.07.2012 20:09
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        Oust that dreaded limescale from your kettle!

        Oust All Purpose Descaler
        ______________________

        When it comes to descaling the kettle, I think it has to go down as one of life's lesser forms of entertainment. Unfortunately though, it's a necessary chore which needs doing from time to time especially if, like me, you live in one of the infamous hard water areas of the UK.

        Where I live the water is harder than Arnold Schwarzenegger on steroids and it doesn't take long for my kettle innards to become coated in a film of dark yellow scum - also known as limescale.

        Fortunately though, Oust descaler makes the banality of such a task as quick and easy as possible allowing you to get on with the rest of your life...and get back to using the kettle for what it's meant to be used for.

        In each box of Oust you get three separate 25ml liquid sachets formulated to remove limescale deposits from kettles, steam irons, coffee makers and shower heads (I have only used Oust on my kettle and will be reviewing its effectiveness in this area alone). Each sachet is filled with a light blue liquid with a watery consistency and there's no denying that the stuff does smell quite strong - a very potent vinegary odour which I find quite unpleasant.

        I first came across Oust Descaler at work where I noticed a box in the kitchen cupboard. I thought this was just the stuff I needed for my kettle so naturally I helped myself to a sachet and took it home to try out (shh!)

        == Why use Oust All Purpose Descaler? ==

        Oust Descaler does pretty much what it says on the box - it descales your kitchen appliances protecting them from malfunction. Limescale can shorten the life of your appliances so it is recommended that you descale such items every 3 months in hard water areas. For those of you lucky enough to live in soft water areas, the risk of limescale build-up is less significant so you won't have to descale quite so profusely but it is still an important task.

        Limescale builds up on the heating elements of electrical appliances reducing their effectiveness and causing malfunction if left untreated. Regarding kettles, the boiling time will be noticeably increased under heavy limescale and boiling water will use more electricity (and just as importantly it will mean you're standing around longer waiting to make your cuppa!)

        == Directions for use ==

        Following the instructions on the box you simply fill your kettle up and let it boil. When boiled, snip off the corner of one of the sachets and slowly pour the contents into the kettle. A fizzing reaction will start to unfold and all that's left to do now is leave it to work for around 10 minutes. There is no need to pull up a chair and watch the action unfold. As long as no one is in danger of making themselves a cup of coffee in the meantime, you can use the 10 minutes to pursue more productive endeavours.

        I prefer to leave the kettle outside whilst cleaning because the whole process is not the most pleasant on my olfactory senses. The fizzing releases a strong vinegar smell which if done indoors has the tendency to linger around for a few hours. Therefore, after my kettle has boiled I take it outside to add the Oust and leave it there whilst it works (this also reduces the chance of any unpleasant beverages being made by unsuspecting victims).

        It is important to add the liquid slowly as adding it all at once will result in an uncontrollable and possibly disastrous fizzing up. I take extra care to add it bit by bit, waiting for each surge of fizz to calm down before adding the next bit.

        The instructions also specify to only half fill your kettle with water before adding Oust. However, if like me you find yourself with limescale deposits further up the inside of the kettle than the half-way mark, it makes sense to fill the kettle above this point because the descaler will not attack anything above the waterline. I find that visible limescale tends to build up to around the 6-cup mark on my 8-cup capacity kettle and accumulates especially around the filter/spout area. Rather than risk missing anything though, I just fill mine up to the max before adding the Oust. This is acceptable as long as you add the solution slowly and I don't really see why the instructions specify only filling half way. Granted, if you have not used this before, then you may be inclined to add the solution all at once which, with a full kettle, would surely result in one big mess. However, having used this on numerous occasions and adding it carefully each time I have no disasters to report in this area.

        == Results ==

        Unfortunately, after the 10 minutes I often come back to find that some limescale remains after the fizzing has abated. This is most often the case if my kettle hasn't been descaled for a while and significant deposits have built up. However, as per the instructions, I simple re-boil the kettle (with the solution still inside) which kick-starts the fizzing process once more and attacks the remaining limescale. However, be careful when doing this, especially if you've filled the kettle to the max, because a potential disaster is afoot here. I never let the kettle re-boil completely and switch it off as soon as the contents start frothing up before the kitchen side gets doused in a vinegar-scented solution. I also give the current land-speed record a good run for its money as I try to get the kettle outside as quickly as possible before its nauseating stench has too much time to upset the ambience of my kitchen.

        After doing this, I leave it for another few minutes after which the rest of the limescale has usually been eradicated. However, you can repeat this re-boiling process again if you need to but doing it once has always proven sufficient in my experience.

        On the whole, I am very happy with the results that Oust descaler gives and it gets rid of around 95% of the visible limescale in my kettle. The sides of my kettle always come out looking brand new and pristine white which is remarkable considering that only 10-15 minutes earlier it had looked more yellow than white.

        However, limescale does prove more difficult to remove from the metal heating element at the base of my kettle. This is the main reason why I often have to re-boil the solution after the initial 10 minutes so that the descaler has more time to act on this stubborn area. This has proved virtually impossible to get spotless as there seems to be a bit of limescale around the edges of the base which looks like it's there to stay. As this is only a very small area though I am not going to lose too much sleep over it and choose to accept it. It's worth pointing out that my kettle has a concealed heating element and the results may vary with a visible heating coil. A little research tells me that limescale is much easier to remove from a concealed element base plate rather than a coiled element (information courtesy of Google and me having nothing better to do).

        Another area of mixed results tends to be my kettle filter which sits near the spout. I often find that large clumps of limescale still remain around the edges where the filter meets the kettle. I have found that by temporarily removing the filter from the kettle beforehand and dislodging these clumps manually prior to descaling seems to produce better results.

        On the whole though, the results are very good and the process is still much easier than trying to remove the limescale yourself (which I would not advise).

        == Put the kettle on...but not just yet ==

        Before you start celebrating a job well done by making yourself a cup of tea it is necessary to rinse the kettle out thoroughly. Firstly, dispose of the contents into the sink (or the outside drain to keep that smell at bay!) and then give the kettle a thorough rinse with cold water. The instructions stipulate that you rinse the kettle thoroughly and then boil the kettle twice disposing of the water on each occasion before you resume using the kettle for consumption purposes. I am always a little on the cautious side when it comes to things like this so I complete this rinse, fill, boil and dispose process 3-4 times just to make sure that any solution has been completely removed from the kettle. A good rule of thumb I have found is that when the kettle no longer has a faint vinegar smell you're good to go on the tea-making front.

        == Price/Availability ==

        A box of three sachets of Oust All Purpose Descaler can be found in all the major supermarkets for around £1.40 - £1.50 which works out at around 50p per clean. I find that my kettle will last around 2-3 months before needing descaling so at this price I think it is good value.

        I have found the boxes a little tricky to locate in some supermarkets due to their miscellaneous nature but in my local Tesco store I managed to track them down in the household cleaning products aisle; next to the oven cleaners and surface wipes.

        I would definitely recommend using Oust All Purpose Descaler as a quick and trouble-free way to remove limescale from your kettle. The sachets are really easy to use and the results are impressive considering the before and after states of my kettle. Say goodbye to slow boiling times and limescale in your tea. For a few months anyway because, like Arnie himself, the limescale will be back!

        Thank you for reading :)

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          01.05.2012 21:13
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          Gets rid of kettle scum fast

          As I went to fill up my kettle to boil some water I noticed some flaky bits of limescale floating about in the water. I live in a hard water area so this is hardly surprising but it still made me go "eugh!" The thought of limescale floating about in my cup of tea put me right off and I decided to boil some water in my microwave instead for my cup of tea. Not only does limescale look unsightly it can also clog up the components of your appliance reducing its lifetime. It also makes them work harder which ultimately costs more in terms of energy usage. With this in my mind on my shopping trip yesterday I made sure to pick up some descaler to try and get rid of the limescale. The only brand that I spotted was Oust, which was retailing at £1.50 for 3 sachets.

          Oust is an all purpose descaler and can be used in a variety of appliances including kettles, irons, showerheads and coffee makers. Impressively it is recommended by several reputable appliance manufacturers including Morphy Richards, Siemens, Russell Hobbs and Prestige. The product is designed to restore good-as-new shine and performance to household appliances. The front of the packaging states that this descaler has a super-fast action formula that works in just 10 minutes.

          Once I got home I was keen to put this descaler to use. I opened the box and removed a sachet. Each sachet is white and has a comprehensive set of instructions on how to use the product depending on what item you are trying to descale. The descaler is suitable for all types of kettles including those made of plastic. To use I half filled the kettle with water and set it off to boil.

          Once boiled, I unplugged the kettle and placed it in the sink. I cut of the top of the sachet and slowly poured the descaler, which is in the form of a colourless liquid, into the kettle. As soon as this hit the water it started to fizz quite violently and I did worry that it would overflow but luckily it didn't. I understand now why the instructions state to only half fill the kettle! I left this to work for 10 minutes and then came back to it. By this point the liquid had stopped fizzing and was clear in colour. Peering into the kettle I could immediately see that this product had done the trick! The inside was as clear as new and there was no hint of any limescale. I was pretty impressed! For tougher limescale coverages the instructions recommend reheating the solution again to activate the solution or using 2 packets to start with. Once the kettle was descaled I poured away the solution, rinsed the kettle a couple of times with cold water, boiled again with cold water and then rinsed once more.

          The manufacturers recommend that you use this every 3 months in hard water areas to leave appliances looking as good as new and running efficiently. For soft water areas this should be used every 6 months. This is quite obviously potent stuff and there are some safety instructions that come with this. It can cause irritation if it comes in contact with skin and for this reason you should wear gloves when using it (I didn't but will make sure to do so next time).

          Overall I am really impressed with this descaler. It works a treat and has left my kettle looking like the day I received it! It therefore comes with a high recommendation from me.

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            21.12.2011 17:19
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            Good value all purpose limescale remover.

            As one of my occupations involves working in a supermarket I do get customers asking where things are and the Oust All Purpose Descaler is something that pops up quite often. The product is clearly quite popular and in the supermarket I work it is the only descaler available, so it sells well. The packaging is quite simple, the descaler comes in a predominantly blue box with a number of appliances pictured, including a kettle and iron. The branding and product name are quite clear and the other thing that stands out is the bubble containing the claim that this descaler will remove 20% more limescale than the previous formula.

            There are three individual sachets included in the box and each plastic sachet contains 25ml of solution. At a cost of around £2 I think this is reasonable, but does it really work?

            The instructions included in the box outline how to use the product effectively. The kettle is probably the product I descale most regularly as it gets a lot of use and build-up of limescale. I fill the kettle to half full and then boil it. I then add the contents of the sachet. I leave this for 10 minutes or longer to allow the descaling process to occur. I often find that there are some tough areas which are stubborn and I end up stirring the solution to try to loosen it. Once I have rinsed the kettle out I am almost always impressed with the results, and the same process is carried out for other appliances until results are achieved. I use this on my iron by placing it in a bowl of boiling water, also shower heads are a good place to start for impressive results. Shower heads slowly clog up with limescale and it feels as if I have a new shower with the removal of the limescale.


            The downsides are expected really. The smell is quick a strong chemical one and is at its most pungent when the formula is at work on the limescale. Some form of chemical reaction is taking place and the result isn't pleasant at all. I usually open the kitchen door when I am using this product and although I don't use gloves I suppose they would be a good idea. The use of hot water is vital for best results, and as the instructions gives advice on a number of appliances it really is helpful.

            Overall my experience and results are impressive, I am yet to find an appliance that this product hasn't worked on. Taking a closer look at the WWW.Oustdescalers.co.uk website I have noticed that they have a range of descalers designed for different appliances, the All Purpose Descaler is a general descaler and is more likely to be stocked at your local supermarket.

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              10.12.2011 15:45

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              Generally a good product despite the lingering smell

              We live in a hard water area and are prone to having a lot of limescale on our showerhead, iron and inside our kettle and it really is a terrible nuisance.

              We looked for something cheap that would do the job and at £1.39 we decided on Oust as we have used the brand before with some good scuccess.

              The box has three 25ml sachets which you have to split open and then place inside a half filled pre boiled kettle and just leave it to fizz and basically do its job for around ten minutes.

              After the said time you have to chuck out the water and limescale contents and make sure you rinse very well and boil the kettle again a fair few times before you drink any water from it. It worked really well and the kettle looked as good as new and limescale free after just ten minutes as the instructions said.

              The downside was that there was an iffy smell after we'd used this product and no matter how many times we kept boiling the kettle we could still detect the smell and it hung about for about 48 hours afterwards. Its gone now but it took a while and put us off from having a cuppa afterwards for a bit.

              You also have to be careful because the box states that if you have sensitive skin the contents can be an irritant so take care if you are at all sensitive.

              I would recommend this product because it is cheap and easy to find and it really does work very well as its supposed to do without any effort.

              Review also posted on Ciao as sorehead

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              14.08.2011 08:18
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              I can't get too excited at this

              My wife bought one of these packets from Tesco the week before last - she wanted me to 'do the iron' which she thought was blocked. I normally use vinegar to clear limescale from the kettle and just make sure that it is well rinsed before using. I had read somewhere that it isn't always a good idea to use descaler in irons and that some manufacturers don't recommend it. However, I didn't see any reason not to use it, provided I closely followed the instructions. I certainly didn't fancy using vinegar in an iron.

              In the end, always trying to get full value, I descaled the kettle first with one of the sachets - it only takes 10 minutes -, then I re-boiled the water until it was just below boiling point and then used some of this water in the iron. I don't think it can have been much of a blockage because although I was using spent solution, after I held the steam button down for a couple of minutes everything was running clear and there were a few clumps of limescale which I was able to wipe off which had clogged 2 or 3 of the steam holes in the baseplate of the iron.

              Our water isn't too bad, so the descaling task isn't one that happens very often in our house. If it was down to me, I would never buy this stuff. It's not that it doesn't work - it's just that there are cheaper methods.
              I've got some nice strong concentrated descaler which I incorporate in my periodic toilet deep cleans and I also use this on the taps where, if left, we do get a deposit build-up.

              This product is, I think, quite expensive for what it is and if I had bought such a product, I would have bought the liquid version which allows you to have a bit more flexibility as to how much you use. With the 3 individual sachets you get in this box, the likelihood is that you will only get 3 items descaled for your money, whereas with a liquid descaler you can use as much or as little as will get the job done and then retain the remainder for future descaling.

              As it is, we have two sachets left for next time; the next job is likely to be the big old fashioned metal shower head which is affected by scale more than the plastic heads for some reason.

              I don't think this product is worth more than a run of the mill 3 dooyoo stars and for what it is, it's quite expensive, I think - it's £1.51 for a pack of three sachets from Tesco.

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                14.07.2011 19:12
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                Don't bother, buy some vinegar instead

                The area I live in is beautiful, rolling countryside, sheep in fields and water that is as hard as nails. Honestly the water here is dead hard and would quite happily take on Ross Kemp and all his gangs. Even when we use a water filter the kettle takes on a crusty lining of calcium carbonate (otherwise known as limescale) within hours of being cleaned. Our taps aren't much better, leave one dripping and I swear it grows stalactites overnight. The latest weapon in my never-ending war with the evil limescale is Oust All Purpose De-scaler, which is sold in boxes containing three sachets of liquid and claims to clear limescale within ten minutes.

                Both the box and sachets are printed with the instructions for use on (or should that be in) kettles, coffee makers, irons and shower heads. Hey, I thought this was an all purpose de-scaler, what about taps and draining boards, they get scaly too. To be perfectly honest I don't own a coffee maker, my shower is one of those cheap rubber things you attach to the taps and my iron has one of those fancy anti-calc functions, so I've only ever used this in my kettle. But the instructions are very clearly printed should you want to try it on any of those other items. Along with the instructions there are a number of warnings, such as this is an irritant and contains lactic acid (which comes from milk and would be why it's an irritant).

                My usual weapon of choice when it comes to annihilating limescale is acetic acid, or vinegar as it's better known, which I leave to work it's magic overnight. So the idea that I could remove all traces of limescale within ten minutes did appeal to me and I couldn't wait to see if this would work. The instructions stated that I should half fill the kettle with water, boil it and then unplug before slowly adding the contents of the sachet. It was easy enough to open the sachet, although a pair of scissors was required as there wasn't a tear here notch. On adding the contents of the sachet to the kettle there was a very satisfying fizz as the acid began to dissolve the limescale. From my vague recollection of schoolgirl chemistry, as the acid reacts with the calcium carbonate (limescale), it releases CO2 (hence the bubbles) and forms a water soluble compound. The intensity of this reaction is increased by heat which is why the acid is added to boiling water.

                After adding the sachet to the kettle, I had to wait 10 minutes for it to work it's magic, so I toddled about wiping the sides down while I waited and checking every couple of minutes to make sure it was still fizzing. Each time I checked I got a whiff of the slightly unpleasant smell that surprisingly enough smelt of acid, in fact to me is had the slight whiff of sulphuric acid mixed with off milk. Anyway it wasn't pleasant and certainly not something I would choose to smell. After the 10 minutes were finally up, I had a good look inside and while the fizzing had faded away the limescale certainly hadn't. If anything the interior of the kettle looked worse, you see rather than being one of those fancy boilers of water with a hidden element, the element is there for all to see and the oust had managed to remove a little of the limescale. Meaning that the element was now a patchwork of dull limescale on a shiny background, with there definitely being more dull than shiny.

                The instructions do state that if you don't get the desired results within ten minutes you can turn the kettle back on just long enough to start everything fizzing again, which I did. I then waited another 10 minutes and checked the results, which were quite frankly still disappointing. I then decided that the concentration simply wasn't strong enough to deal with the extra resilient limescale that had taken over my element. So I emptied the kettle out, refilled it to the minimum level, boiled it, added another sachet and left it for not ten but twenty minutes. The results, success at last, the limescale had put up a fight, but I had finally won the battle and was rewarded with an ultra-shiny element that looked almost as good as new. I say almost because as well as forming a delightful crust, limescale also stains metal meaning it will never be quite as shiny as when it was new.

                After finally getting a result I was happy with, all that was left was to empty the kettle, rinse it, fill it with cold water, boil, rinse, fill and boil once more before emptying the kettle a final time. There the kettle was finally ready to use again and it only took 45 minutes. So much for the ten minute promise.

                To be brutally honest, I was very disappointed with this de-scaler, I know that I live in an area of extreme hard water, but this simply isn't up to the job. I bought this to save time, after all ten minutes is significantly less than overnight, but I think it would have been far less work to leave vinegar in the kettle overnight and miss all the faffing about checking that it had worked. I also think the all purpose label is a misnomer, there's no way this can be described as all purpose, it cannot be easily used on taps or draining boards. So from my experience I'm going to give Oust All Purpose De-scaler a measly one star out of five and suggest that rather than buying this you spend the £1.60 on some white vinegar which can be used to remove limescale from all surfaces and even add a tang to your chips.

                *To remove limescale from your kettle using white vinegar, simply just under half fill it using one part water and one part vinegar, put it on to boil, switch off and leave over night. The next morning you just need to rinse it a few times, safe in the knowledge that you haven't used any nasty chemicals. You can also use vinegar to remove limescale from taps (soak a piece of cotton wool in vinegar then secure to tap with elastic bag), draining boards, shower heads etc. (That's truly an all purpose limescale remover).

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                  12.02.2011 00:00
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                  Removes limescale - fast

                  Anyone who, like me, has a metal kettle and lives in a hard water area will know just how quickly limescale builds up. Not that the problem is contained to just metal kettles, or hard water areas, I'm sure all kettles suffer at some point during their lifetime. I also have a similar problem with my shower head.

                  Limescale builds up due to the high mineral content in hard water (calcium carbonate), which if heated above 55 Centigrade and allowed to cool (as you do in a kettle) creates limescale. As the water evaporates, white deposits are left. This has led to not very tasty teas and coffees being produced in our household and my quest for any easy solution to the ongoing problem. I've tried filtering the water before boiling but this doesn't seem to help, and the Kim and Aggie tips from 'how clean is your house' of cleaning with malt vinegar or lemon juice hardly seem practical for a kettle.

                  When browsing the cleaning aisle in my local Tesco for any products that may help resolve this issue, I came across oust all purpose descaler and thought it worth a go. Priced at £2.19 for a box containing three sachets of the product I felt that, if this worked, it was well worth the money.

                  The box (and each of the sachets within it) has instructions on how to use the product for descaling kettles, coffee makers and steam irons. I have only used this on my kettle and shower head, so my review is based on my experience of this. The box makes the bold promise that appliances can be 'restored to their former glory' within ten minutes. Promising.

                  So, to descale the kettle, you need to boil a half filled kettle and then unplug and place in the sink. You then need to slowly add the contents of the sachet and leave for 10 minutes. The sachets contain the product, which is a clear liquid. Upon opening I was hit with a very pungent, chemically smell. i would advise that you open a window whilst using this product as the smell is really strong. On emptying the sachet into the kettle, the water immediately began to fizz, not violently but very noticeably none-the-less. I duly left for 10 minutes and, upon my return, I could see that no limescale remained. The bottom of my kettle was shiny and new again, impressive. The next direction on the instruction was, if any scale remained, to reheat the kettle until the liquid fizzes (not boil). Just to make sure, I followed this through too. Then you need to rinse away the water, refill and boil and rinse again. I have to confess to carrying out this process 2 or 3 times each time I use the product as the smell is so chemically, I really want to be sure that all product is removed before anyone drinks from the kettle.

                  To clean my showerhead, I remove it from the shower and soak it in a mixture of hot water and a sachet of the oust descaler for about an hour. Unfortunately, although the packaging says the product is suitable for showerheads, it does not provide any instructions for it's use in this way. Therefore, after a bit of trial and error, this is what I have found works best for me. This again effectively removes all limescale and leaves my showerhead looking good, but also allows the water to flow through the holes at full capacity again - leading to a better shower experience.

                  I tend to need to treat my kettle every couple of months and my showerhead less frequently. As it's so simple to do and removing the limescale helps to prolong the life of appliances, I think it is well worth doing and is good value for money. The one offputting thing that could be improved is the terribley chemically smell.

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                  23.12.2010 17:21

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                  Just a quick one - mix oust with boiling water and wipe over bathroom shower glass. No scrubbing required just simply wipes clean... it's amazing. I have tried everything, living in a hard water area and water drops would scale and I dreaded cleaning the glass but with Oust it's quick and no fuss.... oh and it's great for it's intended purpose as well lol

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                  28.11.2010 10:37
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                  An effective descaler which does an excellent job

                  I currently live in a hard water area and it is becoming a real issue with limescale in the bottom of my kettle. I had never really had an issue before but recently it got completely out of hand.

                  Nothing is more disgusting then seeing limescale because you always know that this flaky and crusty part of my kettle might end up inside my cup of tea and it is just the thought which is nasty.

                  I have to admit when this happens I would rather spend money on a new kettle because I just assume it might be a long challenge to remove that stubborn limescale.

                  I read once about a remedy to remove limescale without the assistance of branded products. The idea was to pour white vinegar and boil this inside a kettle and leave it overnight and it would remove the limescale.

                  I did this and it never removed anything except leave behind the vinegar smell so I eventually settled for the Oust pack. I paid £1 for 3 sachets and I used one of these 25ml for my kettle.

                  I poured this into a kettle which had just boiled and I did this inside a bowl and left it for 30 minutes although some say less time is needed. I left the lid on and I knew it was fizzing away inside this liquid I poured in.

                  I then poured the contents out and I admit it removed about 80% of the limescale and there was some more left over so I repeated the process and left it again a further 30 minutes and it was sorted and all that for £1.

                  The good part about Oust is that it does work because I have tried things before which never did and the price of kettles can be so high in price so just a simple £1 to save myself from getting a new kettle has to be good value for money.

                  You need to fill the kettle however to a level where the limescale is. There is no point pouring this product into a half filled kettle when the limescale is near the top of the kettle. I found the results very good and yes I admit I used 2 sachets but I had left this kettle for a long period of time.

                  The after effects were a nice shiny kettle which in all honesty looked brand new and it was fantastic and now once a month I use this to make sure that build up never occurs again. I am aware this can be used on other limescale items.

                  I know people use shower heads for this and they follow the same idea except the shower head is placed inside a bowl of hot water inside with the Oust descaler inside.

                  My opinion is the product works quickly, it is hassle free and cheap. I would keep away from children and obviously all products carry risks and these are visible on the box.

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                    16.06.2010 10:45
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                    Excellent product

                    This is a wonderful descaler for most small household appliances, including electric kettles, steam irons, coffee machines and shower heads. As I live in a very hard water area I have a massive lime scale problem and have found this the best all round descaler for my small appliances.


                    A build up of lime scale, looks ugly particularly in kettles, damages the elements in the appliance and can cause marks on fabrics if allowed to build up in your steam iron.


                    Oust will remove heavy limes scale deposits in around 10 minutes full instructions are on the pack for each appliance and on the weekend I used it on my iron and kettle which prompted me to write this review so I will example these for this purpose.


                    First of all certain precautions must be taken to ensure that this product does not go in the eyes as this can cause serious damage so be careful not to splash the products when using. It is also irritating to the skin so if you do happen to get some on the skin wash with plenty of water immediately.


                    For use with the kettle

                    Half fill the kettle with cold water and bring to the boil, do not add more than half the kettle as the liquid once added will fizz up so you do not want it to overflow.

                    Once the kettle has boiled, unplug the kettle and carefully and slowly add the sachet of oust descaler, I usually run it down the inside of the kettle to avoid splashing.

                    Empty the kettle and re-boil to remove residue chemicals, then rinse the kettle with plenty of cold water. The product works exceptionally well in the kettle and should remove all traces of lime scale with one application.

                    For use with the iron

                    Read manufactures instructions prior to using this in the iron to make sure that you can use commercial descalers in it. If so pour one sachet of oust into the water chamber, I use the little plastic water filler that came with the iron for this it is easier than getting it in than with the sachet without dripping any, then top up with water, put the iron on the steam setting and leave for 10 minutes to allow the product to clear the steam holes. Empty the chamber and repeat with plain water to rinse.

                    I couldn't believe how much steam came out of my iron after I had used this; I hadn't descaled it since I bought it some 3 years ago and was thinking I might need a new iron, but it seems as good as new now.

                    A second application can be used if necessary for stubborn lime scale but I have used it on my kettle quite a few times and never had to do this.

                    I also had a slow running shower a couple of months ago, Oust sorted that out, all you need to do is remove the shower head put approximately ½ pint of hot water in a jug and add the shower head, leave for 10 minutes, and if lime scale is the problem as it was in my case, then Oust should shift it and the shower head will run normally again.

                    It is recommended to keep your small appliances in tip top condition to descale them every 3 months in a hard water area, and every 6 months in a soft water area.

                    Oust All Purpose Descaler can be found in most supermarkets or hardware stores and is currently £1.48 for a pack of 3 sachets at Tesco.

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                      25.09.2009 20:15
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                      I live on cups of tea - several every day, as well as regularly boiling my kettle for water to cook in . As I live in a pretty hard water area, this done mean that it tends to get scaled up . Now, I'm not the best at keeping my kettle free of scale, and I only tend to notice when bits pop off into my tea - not tasty!

                      So, I went to the supermarket last time it happened, and picked up some Oust All Purpose Descaler . The box came with three sachets of the descaler,and it was so easy to use . All I had to do was half fill my kettle, bring it to the boil, and then leave it to cool down a little . Then I had to unplug the kettle , and pour one sachet of descaler into the kettle, and leave it to work for ten minutes. Except that I left it for 20, because I got distracted by a magazine.

                      When I eventually remembered, I emptied the kettle down the sink and was amazed to see all the bits of limescale going down the plughole. There seemed to be loads of it coming out, and it was great watching it drain away, because I could physically see the grot that had been removed .I then looked inside the kettle, and it looked brand new - the previously dull, white, scale caked element was shiny and glistening, the mesh filter was un-clogged, and the kettle just looked incredibly clean .

                      Of course, you need to rinse the kettle thoroughly after you use this, so I rinsed once with cold water, then filled it and boiled it, tipped the water out again, and then gave it another cold rinse.

                      I then felt satisfied with a job well done, and made myself a cuppa - which was scale free and delicious! My kettle seemed to boil faster too, although that may just be my imagination .

                      You can also use this product on coffee machines and irons, although I have never used it on either. I did however re-use a little of the mixture I used in the kettle, and soaked cloths in them then wrapped them round my bathroom taps - after ten minutes, it was easy to simply wipe off any buildup. It says on the packet also that you can use it on plastic and stainless steel - my taps are steel and my kettle plastic, and I had no problems using it on either .

                      I purchased my sachets for a pound in my local pound shop, I have seen them available in my local supermarket, but they were more expensive there, around £1.60 .

                      What can I say - its a great product that will keep your kettle fresh and clean, and therefore keep your tea tasty . It 's easy to use, inexpensive, and will , hopefully, prolong the life of my kettle!

                      5 stars .

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                      20.07.2009 20:02
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                      Small Appliances last longer if they are regularly descaled.

                      Oust All Purpose Descaler is one of those products that I always have to hand. Our water is between medium and hard, I recently used a test strip to check our water status and when the strip was dipped into a mug of cold water three out of four small squares along the strip turned colour indicating that we are in a medium to hard water area.

                      Both of us have a `thing` about scale being allowed to build up in the kettle, often before we refill the kettle we will rinse it out with copious amounts of cold water to rid the kettle of any sediment.
                      It is alarming how quickly the scale builds up, it seems to gather around the element and it looks really murky.
                      There would be nothing more off-putting than making a good cuppa and finding that you were drinking scale particles.

                      You get three sachets of Oust All Purpose Descaler in one box and it is easy to use.
                      First of all you need to put some water in the kettle, about half full is fine and then bring the water to the boil.
                      The next step is to unplug the kettle and put it on a surface where the descaler can't do any harm if you spill it, I use the draining board. Then open just one of the sachets and pour it into the semi-cooled water.
                      Leave the Oust Descaler for ten minutes, that gives it plenty of time to work.
                      After the ten minutes is up you should find that the scale has loosened and is floating about inside of the kettle.
                      If you watch as you pour the solution down the sink you will see the scale floating in it and I am sure that you will be surprised at how much is there.
                      Of course you need to make sure that all traces of the Oust descaler are cleaned away, so rinse the kettle thoroughly with cold water and then refill it with water and bring it to the boil. Once it has boiled then tip the water out again and do one final cold rinse.

                      The first thing that I always notice is the difference that the Oust makes to the element, whereas before use the element was furred and dull it usually ends up shiny and bright. Any scale that may have had a chance to build up has vanished.

                      If you have let the inside of your kettle become really `scaled up` then you just may need to repeat the process. You do not need to use a second sachet !
                      When the Oust descaler has been given its ten minutes to work you will naturally check it to see what impact the descaler has had.
                      If you then notice that there is still scale inside of your kettle then plug the kettle back in ( making sure that the kettle and plug are totally dry ) and let the water heat up again until it goes frothy.
                      Unless you have a heavy build up then you will not need to go to this extent.

                      I descale our kettle every couple of months, after eight weeks it needs to be done. Once you have descaled you are confident that your kettle is at its best.
                      Oust does not have too strong an odour but I am always careful to not to splash it onto my skin. The instructions on the packet have all the normal warnings for such a product.

                      Oust All Purpose Descaler is recommended for use in coffee makers, though I have never used it in one.
                      You can also descale your steam iron using Oust and your shower head too.
                      Oust is suitable for both stainless steel and plastic, I have only ever used it on plastic and I can vouch that it does the job admirably.

                      It is possible to buy a single sachet of Oust descaler and you can also buy a 250 ml bottle of liquid Oust.
                      A pack of three 25 ml sachets will cost you in the region of £1.75.
                      Oust All Purpose descaler is available in many supermarkets and hardware stores.
                      If scale is allowed to build then your appliances will have a shorter lifespan, it is far easier and cheaper to descale instead.

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                    • Product Details

                      Leave your appliances free of scale buildup.