We use this collar with our dog at a nearby dog park. Often the vibration or beep function is enough to stop our dog from barking. The collar does have to be relatively tight for the shock to be felt. Our dog does respond to the shock when he is being too loud. Our dog is friendly but big and has a deep bark so we only have to shock if another dog or owner is visibly uncomfortable. Can definitely say that our dog is barking less and less at other dogs. Collar has been awesome.