【Anti-bark device up to 50 feet】 The sound penetration range is 50 feet, covering indoors and outdoors. Compared with the traditional dog training device, it completely frees your hands. You can easily train the dog’s behavior by turning the knob. After the test, the best effect is within 50 feet. The smaller the range, the better the effect. 【Effective on most dogs】 The device works on most breeds and sizes, but not on deaf or hard of hearing dogs. Some dogs may be scared or dislike the sound of ultrasound, they won’t stop barking at first. Please allow up to 2 weeks for training. 【Safe Bark Stopper】sonic is harmless to pets. If the dog is hard of hearing or aggressive, the device may not work as expected. It is not recommended to use one device against two or more barking dogs at the same time. 【Easy installation and waterproof】 The device is designed to be easily hung on a tree, wall , a fence post or a can be erected to prevent your own dog or that of your neighbors from barking.
