Do you feel sorry that your dog disturbs the neighbor's sleep when you are asleep at night? You must be very reluctant to use a cruel electric shock way to train your dog to keep quiet. It's time to try our Ultrasonic Dog Bark Control Deterrents and gentlely say goodbye to those endless barking. When the outdoor bark control is within range of a barking dog, microphone pick up the sound and unit is automatically activated.When the dog stops barking the ultrasonic sound also stops. Please use this device with dogs between 6 Months to 8 Years old.If the dog is deaf or hearing impaired, he may not react to device.Don't use this device with violent and aggressive dogs.Please use this device with only one dog during training. It is powered by rechargeable battery. With the aid of an internal microphone which picks up dog bark, Outdoor Bark Control is automatically activated when it detects barks up to 50 feet away. It then emits ultrasonic sound. More effective than old version deterrents and waterproof. Using high-quality materials, its tough construction allows it to operate in rain or snow, even the harshest weather. It's also a headache to have a mischievous dog at home, especially the one who breaks the house, always barks, defecates everywhere and often digs the ground.Our ultrasonic dog bark deterrent combines dog training and bark control, which can effectively train your dog to stop unwanted behaviors. Help others learn more about this product by uploading a video! Zigzagmars Anti Barking Device WARM TIPS Recharging Anti Barking Device Waterproof Outdoor Barking Control BAD BEHAVIOUR IMPROVEMENT