The ultrasonic dog repeller mainly uses the principle of ultrasound. Because the dog's hearing is very sensitive, the ultrasound can emit strong sound waves when it vibrates, and the maximum can reach 50,000 Hz. Although this sound wave cannot be heard by human ears, it sounds like thunder to dogs.

Ultrasonic dog repellers will not irritate the dog, but will only make it frightened and flee. When using an ultrasonic dog repeller, you also need to pay attention to the following:

First, it is only used for self-defense;

Second, avoid launching close to the ear;

Third, no non-lighting gear lighting is required. Outdoor Ultrasonic Dog Bark Control Training Device is your good choice.