David at Bark Busters has changed our lives. Not just mine or my husband's, but also our dogs' little lives. Before David and Bark Busters, Lola and Eva were totally out of control. They barked at people, other dogs, and bit countless children and attacked unsuspecting joggers, bikers, and passersby. And were constantly scared of everything, hence their aggression. Both girls had to wear muzzles and despite this, still attempted to attack anyone who came within 20 feet of us. And forget having people over to the house...when we had visitors before, the girls would run around barking and biting all of our guests, which was not a fun time for anyone. After David's first visit, both Lola and Eva were able to walk next to me without barking at humans and without pulling on the leash and fighting with each other. They also were able to wait by the door and keep quiet until released by us when company came over...and things only continued to improve! By David's third visit, the dogs had stopped barking at humans and dogs both, and are able to have people to the house without any trouble, and essentially behave like they have been abducted by aliens and replaced with two well-behaved dogs. We couldn't love Bark Busters or David any more if we tried!!!! And I highly recommend getting the lifetime warranty because even if your dogs slip up and forget some of their training (your fault as the owner, not theirs as the dogs), David will come right out and re-teach them and you everything they need to know! We love Bark Busters!!!!!!