In a couple months, I'll be heading back to SC to resume building our house. I'd like to get a pet to keep me company, but it will have to be a cat, since they can handle being on their own better than a dog. I figured I'd just install a cat door in the barn so he can come and go as he pleases, but I'm worried about possums or raccoons getting into the barn via the cat door. I know they can be rigged so you can lock it after the cat is in, but it would be better if the cat has full access, especially if I'm away for a couple days. Our cat here at home does just fine while we're away; we leave plenty of food and water; but she has a litter box. I guess I could have a litter box, and lock the cat in the barn when I leave, but I'd rather not. Anyone had any experience with this? What do you do?