Petsafe Outdoor Bark Control Birdhouse Deters nuisance barking of either your own dogs or your neighbour's dogs.
When the Outdoor Bark Control is within range of constant barking, an internal microphone picks up the sound and the unit is activated.
An ultrasonic sound can only be heard by the dog which should soon associate its bark with the unpleasant noise and deter it from barking.
The Petsafe Outdoor Bark Control has 4 settings including 3 sensitivity levels and a test mode, it is effective up to 15 meters and is designed to hang/mount on a tree, wall or fence post.
9-volt battery required (not included).