Dealzip Inc Animal Dog Whistle Herding Small Stop Barking Training Deterrent Plastic Repeller Whistles Train your dog to stop barking and follow simple commands. Use the dog whistle to call your dog or train to stop barking. This dog barking whistle is compact, and lightweight, making it incredibly efficient and convenient. Great tool to have when you are training your dog. Control your dog whenever he gets out of line.Best dog whistle it is.