Dog Whistle Trainer, Recall, Stop Barking, Not Silent Pet Puppy Cat Training

Part 1: Ultrasonic. Inaudible to the Human Ear, but very audible to the dog. The dog whistle is in 2 parts. Adjustable pitch - simply tighten or loosen the screw to work out your dogs frequency It should be noted that this whistle is audible to the human ear, essential for gauging its efficiency.

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