I agree wholeheartedly with the reviewer below. My sister gave me a cat some years ago as a "gift" (!?!) and although I'm more fond of dogs than I am of cats, I grew attached to it as time passed in spite of myself. During the last year or so, however, the cat, for whatever reasons, took to bypassing the litter box and relieving itself wherever it chose, nearly driving me crazy in the process. Nothing like getting up in the middle of the night to get a drink of water and stepping in fresh cat s**t. I'm not a cruel person, to animals or people, but I was nearly at the end of my rope and ready to throw the animal out the window when a co-worker who volunteers at an animal shelter recommended this stuff. It's not particularly easy to find (I think the store I bought mine from was called Petco), but well worth the effort if you're having similar problems with a cat and don't want to resort to such draconian measures as having the cat put to sleep or thrown out the window. For me, this product has worked like a charm. The cat uses the little box like a good little feline and the hostility between us has abated to the point where I'm not even concerned (much) about the couch she's shredded to bits, or the chair, or the plant she's chewed to pieces, or...