My three seem to do OK. One used to try to escape, but then figured out that the meal service was a lot better inside.
Ain't that the truth. Our first two got out after the smart one opened a sliding screen door in the dining room. He came back in when we called him, but the other one had to be hunted down and captured. She never even thought about going outside again, she was so scared of the noise and the (very light -- residential) traffic after eight years inside.