Bark Control & Dog Training Our ultrasonic bark control devices provide safe and effective solutions for dog training and bark control. The anti-bark device can effectively train your dog to stop bad behaviors, such as barking, digging, eating dangerous food, fighting, etc. Suitable for dogs of all sizes The average frequency range of human hearing is 20 Hz to 20 kHz, and the range that dogs can hear is wider, from 15 Hz to 120 kHz. The ultrasonic bark controller emits 25 kHz ultrasonic waves, so the sound will not affect people, but can attract the attention of dogs. Easy to use outdoors The ultrasonic dog bark control device fits perfectly in your hand and comes with an adjustable anti-static wrist strap. The anti-bark device has a control radius of 16.4 feet. Because we use ultrasonic technology, it works on dogs of all sizes. User-friendly When you press and hold the button of the ultrasonic bark control, it emits an ultrasonic sound that only dogs can hear. When the device is