You can just imagine the look on the commissioning editors' faces when the producers pitched this idea: we'll get two ladies to go to dirty houses and clean them!

Yet How Clean is your house is strangely watchable. Repeats are currently on More4 and follow the "nation's dream clean team" Kim Woodburn and Aggie McKenzie as they visit some disgusting houses, (with the help of a specialist cleaning team, who should be acknowledged for their wonderful work!).

Kim is a professional cleaner and Aggie is a household journalist, who has a column in the Saturday Times magazine where people can write in and ask for her help with cleaning questions. Together the pair of them turn up in their bright red van (Nice Clean Van written on the back!) at people's houses to assess just how dirty they are. And the answer is "very". I think the reason I watch this is that it makes me feel better about my own house! They give the owners a telling off, try to find out why they're so dirty and then set about cleaning up, usually using natural substances such as lemon juice, toothpaste and vinegar where possible.

While the house is being cleaned, Aggie takes bacteria samples from strategic places within the house and gets them checked out by a lab so she can shock the householders with the results.

At the end of the programme, the subjects of the programmes are reintroduced to their houses after a thorough clean, which sees some truly astonishing transformations. Sometimes Kim and Aggie will return to the "grime scene" two weeks later to see if the house is returning to its former state or if the owner has changed their ways!

Sometimes Kim and Aggie arrive at the local shopping centre to take questions from people in the town, and this, as well as the rest of the programme throws up some brilliant tips. And there's nothing like seeing the contents of the average mattress to inspire cleaning! Since I've started watching this, I've been hoovering my mattress and cleaning my fridge once a week!