We went to Petsmart this last weekend to get some supplies for the kitten my sister is getting in a few weeks, and we got two huge buckets of Feline Pine since the breeder uses it and it's what her kittens are used to. I also wanted to try it out on Sateycat. I filled his old litterbox with it, while keeping the one he has been using full with crystals. So far he pees in the Feline Pine but won't poo in it. In a few days I think I may switch the Feline Pine litter box to where his current box is and see if he'll use it a bit more. Satey has always been so good when I switch litters on him, he'll use anything to go in! But since F.P, is drastically different from any other litter I figured I'd take a few steps to get him used to it.