I always figured that by the time the cops or anyone got there the person would be gone. I don't need to spend $? a month to know someone has been there. When I lived with my DD we had 2 big dogs who scared everyone in the neighborhood. And would growl and bark their heads off if anyone came to the door,in the yard or walked down the street. We didn't tell anyone they were just noisy and pretty big chickens. lol I miss her dogs. My brother has an alarm system and I am always afaid of not getting to the pad in time to turn it off. Stresses me out. I really hate the way things have gone. His is ADT and he seems happy with it.