Dog Repeller: Using a particular frequency ultrasonic wave to train dog and don’t have any harmful to dog. The ultrasonic waves is irritating to dogs.The high intensity sound waves are out of the hearing range of human beings, but able…
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Dog Repeller: Using a particular frequency ultrasonic wave to train dog and don’t have any harmful to dog. The ultrasonic waves is irritating to dogs.The high intensity sound waves are out of the hearing range of human beings, but able…