Features: 1. Say goodbye to nightly nightmares: Some neighbors ignore their dogs' barking, while neighbors like you feel helpless. Instead of enduring the disturbance, why not try this ultrasonic bark deterrent? This stationary device makes dogs more manageable by discouraging barking. 2. Effective range up to 75 feet: This indoor/outdoor bark control device features 3 multi-mode settings; its omnidirectional microphone detects barking from any direction. Mode 1: Close range (within 25 feet); Mode 2: Medium range (within 50 feet); Need more distance? Mode 3: Long-range mode (deter all outdoor dogs within 75 feet). 4. Safe for animals and humans: Tested and proven harmless to humans, animals, and plants. Utilizing precise ultrasonic frequencies, the sound may be inaudible to you. Dogs typically take about two weeks to “understand” the warning meaning of the sharp ultrasonic tone. Extremely easy to operate—the ultimate dog barking deterrent. 5. This compact dog deterrent easily mounts on walls, hangs from tree branches, or attaches to fence posts. Combined with its simple setup, it's the perfect choice for electronic puppy training. 6. Durable and weatherproof—crafted with premium materials for long-lasting use. Its waterproof and moisture-resistant design allows outdoor placement in any weather, making it an exceptional outdoor bark control solution.