Advanced Bark Control Device with 3 Adjustable Modes | USB Rechargeable Sonic Dog Bark Deterrent for Effective Indoor and Outdoor Barking Control up to 10 Meters Review

【Anti Barking Devices 】 Anti-barking devices automatically detect barking from as far away as 50 feet and automatically emits an sound that distracts your dog to stop unwanted barking. Once the dog keeps quiet, the sound will stop automatically. Let you enjoy a moment of peace and silence. 【Dog Barking Deterrent】The device are harmless to pets and completely inaudible to the human ear. Trusted by dog trainer & veterinarians. No electric shock, no liquid propellant is used. If the dog is hearing-impaired or aggressive, the device may not work as expected. Using one device against two or more barking dogs at once is not recommended. 【Range up to 30ft Anti Barking Device】The range of sonic penetration is 30ft, covering the area indoor and outdoor. Compared with the traditional dog training device, it completely frees your hands. You can easily train the dog's behavior by turning on the knob. After testing, the best effect is within 30ft. The smaller the range, the better the effect. 4 modes: The bark control device for outdoor use has 3 adjustable sonic range levels and a test mode: low range, medium range, high range, test mode (to check the function of the microphone and loudspeaker). Effective on Most Dogs: The device works on most breeds and sizes, but not work on deaf or hearing impaired dogs. Some dogs may be afraid or dislike the ultrasonic sound, not stop barking at the beginning. Please allow up to 2 weeks for training.