<p>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? It is the non-portable device that makes dogs more bearable by stopping their barking.Up To 75 Feet Effective Range : Our indoor and outdoor dog bark control devices were conveniently designed with multiple settings; multi-directional microphone picks up dogs in any direction Mode 1: low range (up to 25 feet); mode 2: medium range (up to 50 feet); is it further? Mode 3: High Range (discourages all dogs outside up to 75 feet).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. Due to its precise sonic frequency, you may not even hear it. It will take up to 2 weeks for the barker to \</p>