Stop pesky dog barking with the Sunbeam Sonic egg. This handheld device emits a pet-safe ultrasonic sound that only dogs can hear—a method used by professional dog trainers— and will deter dogs of any breed from annoying barking. This battery-operated device can stand alone, be mounted on a wall, or attached to a tree or fence, and has a 50-foot range. You use Verbal commands such as "No!" To trigger the bark deterrent sound. Use it for your dog, or to deter barking from neighbor dogs.