Eliminates barking and annoying behavior by emitting a piercing ultrasonic tone that pets hate, but humans can barely hear.
Protect yourself from dangerous dogs while cycling, walking, or jogging with the Ultrasonic Dog Repeller. It produces a high frequency sound that the human ear can not detect, yet it is able to deter vicious dogs without harming them. Its even safe enough to use for training dogs.
It did work on the first day we used it. It made the dog stop and look at us. After day one, the dog just ignored it. Even when we placed it next to the dog, the dog kept doing its thing.
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