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One of the most common sounds that annoy people, is the sound of a barking dog. Ultrasonic bark control can put a stop to it. A dog has a higher hearing range than a human. Ultra Sonic sound pitches, first called the Galton's Whistle, or silent whistle, when played, will shy a dog away from barking. Playing this sound through a waterproof blue tooth speaker in the garden, will keep unwanted dogs away.
10000 HZ

Sound To Stop Dog Barking :) How to stop dog barking sound to make dog stop barking. sounds to make your dog stop barking. make your dog stop barking with this sound. Quiet Your Neighbor's Barking Dog With This Sound Effect. Highfrequency or "silent" dog whistles will startle your pooch during his barking spree without disturbing your neighbors and significant other. Keep in mind, though, that other pets like cats, hamsters and ferrets can hear highfrequency sounds, too. If you have more than one pooch, one dog's barking that sets off the highpitched whistle can make life unpleasant for his quiet housemate.sounds to make your dog stop barking.