We watched a wild cat for years, she refused any help, or affection. As she grew old, she became less capable. One cold winter, she finally agreed to come in and warm up (we still couldn't touch her). For awhile she would always go back outside and never used, or really needed a litter. In the year she has been a true indoor cat, we have tried every litter the store carries. She wouldn't use them. We couldn't tell why. We suspected different characteristics might be the problem, but couldn't tell for sure. We ordered this litter, only because of the great deal I found. It was amazing. She used it faithfully, and it lasted a month. I had just bought and poured in a bag of clay litter. I left that on the bottom and added this on top. I signed up for the monthly delivery and just received it, dumped the old, refilled with the new, and she accepted it right away. I'd highly recommend it to anyone, especially those trying to help a wild cat adjust to indoor rules.