Tame the barking without the shock! Our 2nd Gen Ultrasonic Dog Bark Deterrent is a humane, effective solution for controlling unwanted barking. With long-range ultrasonic technology, this rechargeable device works both indoors and outdoors, making it perfect for home use, walks, or yard training. It's the ideal bark collar alternative—no prongs, no pain, just peaceful pups. Safe for dogs of all sizes.