The PetSafe Outdoor Bark House is your solution for bark control from a distance. You are able to control nuisance barking coming from the neighbors without disturbing them. This emits an Ultrasonic Sound to distract or annoy all dogs within 15m from barking too much. The annoying ultrasonic sound cannot be heard by human ears but is safe for dogs. In time, they will learn that barking for no reason is no longer fun activity but their instinct will still letthem bark if absolutely needed.