Never had any of my garters get out, but when I was younger my big PI King had gotten out a couple times (usually....ok, always my fault)...funny thing was she'd never get "lost". She would just cruise the room (my bedroom) and just destroy stuff. She knocked pictures of the walls, tore up carpeting, cleaned off my night stands and dressers and even pulled down curtains. I'd get home to a trashed room and just find her coiled up asleep some where. One time she was all curled up in the sock drawer taking a nap!
Roy