Features: Safe: Our bark-free boxes utilize ultrasonic technology to produce high-frequency sounds that are inaudible to humans but very unpleasant to dogs. This gentle approach provides a scientific and safe method to discourage excessive barking without causing injury or distress to the furry friend. Effective Barking Free Solution: Dog Barking Free Box is an innovative and efficient ultrasonic bark control device designed to deter excessive barking by outdoor dogs. Say goodbye to noise complaints and enjoy a peaceful community with this effective tool. Convenient outdoor solution: Designed for outdoor use, this ultrasonic bark control is weather-resistant and can withstand a variety of outdoor conditions. Install it near your dog39;s favorite barking points, such as fences or gate, and let the device work its effect to control barking. Easy to use and install: The anti-bark box features a user-friendly design and is simple to set up and operate. Simply place it in the desired locations, and then let it do the rest. Its compact size and versatile mounting options make it a convenient choice for any outdoor space. Enjoy a peaceful environment: Control excessive barking and stop snake closing to enjoy a peaceful environment. Whether you have a small or large outdoor dog, this ultrasonic bark control device provides an effective, safe and worry-free solution to prevent barking and keep your surroundings peaceful Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Color box size: 8*6.3*5cm Weight: 85G Packing quantity: 200PCS Box weight: 19.5KG Packing size: 34×33.5×52cm Note: The shipment is not equipped with a battery, a conventional 9V battery Package List: 1*Ultrasonic Dog Expelling Box