All 5 of mine are 100% indoor only. We have had an escape by Bella (remember she was feral for almost the first year of her life and is inside not quit 6 months yet), and one escape by Vixen (brother in law left the door open and she went for a stroll around the yard and couldn't get back in cause the guy upstairs closed the door. she waited on the step to scamper inside when i got home as fast as she could go )Vega is terrified of outdoors and phoenix couldn't care less. Little mr frost is becoming interested but we shall nip that in the bud. He is going to be neutered on monday.