I live in a very bad neighborhood in Riverside, CA. Despite growing up here it's still awlful. You'd be surprized how brazen people are even with that big a.. door out front. It was tough training Miel to use it though. I tried everything. Turned into a game, food, everything. After two weeks I sunk to an all time low. I acted like I was getting attacked and started yelling for her. She charged through the door and became a dogue. It was great! Archie (american bulldog) was cake. Turned it into a game (tug) and he went right through. One quality i like about the door is how loud it is when the dogs run out. It sounds like a shot gun blast which scares the hell out of the sleezebags!