Best Anti-Barking Device And there are three range levels and a test mode; you can use the test mode to verify the microphone and speaker are working properly. The ultrasonic frequency is not harmful to pets and completely inaudible to human ears yet safe and effective training tool for your dog or the neighbor’s dog to disrupt the barking. Buy one now to live happily and harmoniously with your lovely puppy! Click Here https://www.outlookindia.com/business-spotlight/barxstop-reviews-beware-websites-best-anti-barking-device-indoor-outdoor-price-functions-news-230119