I have three dogs, two of whom are distructive when it comes to toys - an Olde Tyme Bulldog and an English Bull Terrier, I have tried all sorts of toys that are suppose to be designed for powerful breeds, however, I have always ended up disappointed.
I use to buy the puppy kongs when my dogs where little and these are fabulous they last ages and get them through the teething stage.
I now buy the larger Kongs they are a great product for certain breeds but for mine I find that they last around a week if that before they are ripped apart, I know this is what they are made for but I would expect them to last a little longer than they do.
They come in all shapes and sizes and I have even tried the giant black Kong which does last longer but still only offers limited entertainment for the dog as once they have tore into them thats it.
My Bull Terrier has incredibly strong jaws so I thought as they are generally designed for stronger breeds this would be perfect but she went through it within a couple of days they are quite expensive to buy I paid £6.00 for mine, however, they are the best made toy that I have found fo my types of breed, my dogs do swallow some of the rubber which luckily they tend to bring back up, they do also make a right mess but it is easily cleaned up with the hoover.
I would say these types of toys should be aimed at less power full breeds or for dogs who do not chew constantly, we now make my own dog toys with old pairs of jeans I cut sections out and tie knots at both ends to make a tug/chew rope they last ages infact they still have the ones we made last year just pop them in the washing machine every now and then to stop them smelling, alot cheaper and less of a disappointment.