Stacwase, both of our cats are indoor/outdoor cats and they definitely prefer it that way. I would not do it if the road in front of our house was too busy, but I don't think I could contain Butter for long if I tried to keep him inside, and Mimi has been doing the inside/outside thing for so long that trying to restrain her at this point would be fruitless too.

We are fortunate that both of them hang close to our house, and we have a litter box indoors for them, but Mimi is the only one that ever uses it.

Wishing you lots of luck and patience. Use your vet for medical issues and try all the other suggestions too, especially isolating to one room with a clean litterbox. I'm thinking a crate is just to confining, but I could be wrong.

Logan