I've tried every kind of litter going, wood, paper, clay and for a long time used catsan clumping but my main problem is that we only have every other week rubbish collections (in the hot weather a wheely bin full of litter is not good) which is why I wanted something flushable! wbcl is good stuff but is expensive, I'd rather spend the money on good food or toys! So although the chick crumbs are not as refined or nicely packaged as wbcl they really do work just as well and at the end of the day and like Lynn mine aren't fussed what's in the tray as long as its clean and not too hard on the paws!!