Your Questions About Dog Barking Training Device

Donald asks…Bark Buster a sonic training device to curb barking dogs?The Bark Buster is a training device that emits a harmless yet high-pitched sonic pulse each time your dog barks (or the neighbor's dog barks). It's inaudible to humans, but quite noticeable to dogs! Your dog will learn to control barking without shock collars or other painful methods. i was wondering if this causes any harm to a dog? also if anyone owns one does it work? here's how it works.not that i own it mind you.

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