Well, I also took in a stray/feral a few months ago. I had no probs with him when I set out a litterpan with clay in it. I also mixed in some powdered up pine litter as well. He still used the thing.
The solution may lie in how I dealt with her though. When I took mine in, I set out to turn him into a strictly indoor cat. So I had him locked up in the bathroom for about a month or so. Then I moved him into my dining room and confined him in there for another 2 weeks. Giving him such a small area perhaps helped in getting him to realize that the litterpan is the area to go for bathroom breaks. Now he's so used to it that the dining room is literally his homebase.
There could be a multitude of reasons for her not using the litterbox. You have to trial and error to figure out what works for your specific cat. It could be the type of litter, the amount of litter, the type of litterbox, the location of the litterbox, how often you scoop, etc. I or the others can help you figure those out, but only if you want me to go into detail. Don't want to bore you too much. Let us know! And thank you for taking her in. It is very kind of you!
Oh yes, also, she's probably confused. She's grown up outside and is used to going anywhere, whenever she wants. So that's probably why she's just going wherever.
Last edited by Alpaca; 01-26-2011 at 09:35 AM.