Forget About Your Daily Nightmares - while some neighbors just don't care about their yelling dog, others like you, just aren't sure what to do. So instead of suffering, why not try the Anti-Bark Ultrasonic Dog Bark Deterrent? Up To 75 Feet Effective Range - Our indoor/outdoor dog bark control devices feature multiple settings and a multi-directional microphone. Mode 1: low range (25 feet); Mode 2: medium range (50 feet); Mode 3: high range (75 feet) to discourage barking from all directions. Safe and Friendly to Animals and People - This ultrasonic dog bark silencer has been tested and proven to be completely harmless to human animals and plants. It will take up to 2 weeks for the barker to "learn" what the piercing noise means. It's So Easy To Use - This small dog deterrent is very easy to mount on a wall to hang on a tree or place on a fence post near your house; Plus, it's extremely easy to set up and start using; making it the best electronic pet training for your dog or neighbors dog. Durable and Weatherproof - It's waterproof and durable so you can hang it outdoors in all weather and takes 1 9V battery (batteries included) making it outdoor bark control for dogs. Will you love the silence and your dog will love not being yelled at?