Concerns that bentonite clays will “set-up” in a cat’s stomach are un-founded. Over half of the litters sold today include bentonite clay and have proven safe for cats since their introduction over fifteen years ago. In fact, the convenience of clumping clays have contributed greatly to the growth of cats as pets. In Dr. Elsey’s 25 plus years as a feline only veterinarian, he has never had a case where clumping litters have caused a problem with a cat.
