Newest Dog Bark Control & Behavior Training - Wango ultrasonic dog anti bark device adapted latest ultrasonic technology, provides a safe and effective solution to stop annoying dog barking and effectively trains your dogs to stop bad behaviors such as barking and digging, eating unsafe food, fighting, etc. . Safe and Humane Anti Barking Device - Just press the button of the ultrasonic anti barking device, the stop barking device will emit a 24khz ultrasonic sound, the sound does not affect humans, but can easily grab the dogs attention and stop their bad behaviors. The ultrasonic barking control device can be applied to all-breed dogs and all-size dogs. . Perfect for Indoor & Outdoor Use - The control range of the Dogs Bark Control Deterrent Device is 16.4ft, it is great for dog training indoor and outdoor. You can even use it to stop your neighbor's dog from barking. Consistent training to help your dog adapt to ultrasound and correct bad behavior. . Portable Hand-held Anti-barking Device - This dog barking control device is lightweight and fits perfectly in your pocket, with a wrist strap and easy to carry when you walk or train your dogs. Push the button of this bark control device, it will emit an ultrasonic sound and meanwhile, the green light will show the device is working, the red light indicates that the device needs to be charged. In most cases, our dog anti bark device can continuously work for 15 days after being fully charged. . Service & Using Tips of this Ultrasonic Anti Bark Device - Every time your dog makes mischiefbarking, leash pulling, jumping, etc., simply press the button and point the ultrasonic dog training clicker directly at him. Once he reacts positively, please praise and reward him to strengthen his memory. We are committed to providing the best service, please feel free to contact us if have any issue, we will solve your problem within 24H. .