Sonic Dog Bark Control Device emits an ultrasonic sound to deter barking dogs.

Sonic Dog Bark Control Device emits an ultrasonic sound to deter barking dogs. When the outdoor bark control is within range (up to 50ft) it emits an ultrasonic sound which can only be heard by the dog or dogs. This should deter them from barking. It works on a 9 bolt battery which will be included. It is safe and effective for all dogs and has three sensitivity levels. It is also weather proof and can be hung or sits stationary.