3.3x More Effective Than Dog Bark Collar: Don’t subject your dog to the painful shock of a dog bark collar and can't falsely triggered. NEVERYOUYU Anti Barking Device for Dogs. Pet Safe and Dog-Friendly Device: Safe And Efficient Ultrasonic technology ( With 10 second ultrasonic auto-shut off) is used to make dogs quiet, which is harmless to all kinds of dogs.
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