Forget About Your Daily Nightmares - while some neighbors just dont care about their yelling dog, others like you, just arent 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. Its 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, its extremely easy to set up and start using; making it the best electronic pet training for your dog or neighbors dog. Durable and Weatherproof - Its 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