Outdoor no-bark device that solves the Problem of Your Dog Barking Outside
but it can also be used to stop your neighbors dog from barking

Whether it's your dog or the neighbor's dog that barks incessantly, here's a great solution to problem barking. New from PetSafe, this "decorative birdhouse" is really a highly effective bark- deterrent in disguise. Designed to be hung easily from trees or quickly mounted on fence posts, this bark-control device uses ultrasonic tones to quell excessive barking from dogs nearby. When the dog barks excessively, the unit emits a high-pitch ultrasonic (inaudible to humans) tone that quiets it down, so you, and your neighbor, can enjoy the day and have uninterrupted sleep at night.
Equipped with an internal microphone, the "birdhouse" detects excessive, repetitive barking up to 50 feet away. The system has 3 settings that let you control its sensitivity to barks. Safe and effective for all breeds and sizes of dogs; durable and weatherproof construction offers years of reliable bark control. And, a low-battery indicator light lets you know when it's time to replace the 9-volt battery (not included).