If your neighbour's dog is driving you bonkers with his barking, help is here! Our ultrasonic Outdoor Bark Control unit looks like any ordinary birdhouse that can hang in a tree, on a fence post, or anywhere outside. It detects barking from up to 15 metres away and has 3 range settings. Whenever your dog – or your neighbour's dog – barks, he will hear a safe, high-pitched sound (inaudible to humans) that will cue him to stop his annoying habit.