★【Why Need It】- More and more people regard pets as a member of the family, but sometimes dogs can't restrain their own nature. Its voice often interferes people's normal life, and also causes the owner to fall into the potential crisis of being complained by neighbors. ★【Technology】- Ultrasonic dog bark controller uses the latest chip,the ultrasonic high-pitch frequency sound that is emitted from the device is inaudible to humans yet safe and effective training tool for your dog or the neighbors dog to disrupt the barking patterns. Effective for all sizes and breeds of dogs. ★【50 Feet Distance】- When the Outdoor Bark Control is within a range of barking dog,the internal microphone picks up the sound up to 50 feet and it will be automatically activated.The Outdoor Bark Control will emit an ultrasonic sound to deter unwanted barking. ★【Design】- The bark controller come with a cute well-designed birdhouse shape, easy hanging or mounting on a tree, wall or fence;Durable and waterproof. ★【Warranty】- 30 Days Money Back & 1 Years Replacement Guarantee: We are always here to support you by providing the best customer service to ensure 100% customer satisfaction!