The Nutrisco Pets Dog Anti Barking Device is an ultrasonic collar designed to help control your dog's barking behavior. This outdoor training device emits a high-pitched sound that is unpleasant to dogs, discouraging them from excessive barking. The collar operates on a battery and is adjustable to fit different dog sizes. This pet training supply is effective, safe, and humane, making it an ideal choice for those looking to stop their dog from barking incessantly. This product is available in various quantities, including 1pcs, 2pcs, 3pcs, and different wood color options. Say goodbye to unwanted barking with the No Bark Control Collars by Nutrisco.