My kids found a kitten outside and we took it into our family. She's been with us for 5 years, and enjoys spending most of her time outside. She's been bothering the neighbors lately. I'd like to keep her inside, but she has a real wild streak and hates being locked up. How can I train her to stay inside? When I've tried before, as soon as anyone goes to the door she tries to bolt. I really don't know what to do.