Cody was collar/leash off inside only. Klo, on the other hand, is a great escape artist and slipped through a slightly opened front door 4x with nuthin on So having learned my lesson quickly, she wears her collar only except to sleep, so I can make a quick grab if I have to. (She ran up the street to her favorite squirrel abundant tree but trying to collar and leash her was a game of tag. Luckily, no cars, and she stopped to poop!) No episodes since the collar is on. She got the message quickly cause she hated it at first.