BEFORE PLACING YOUR ORDER CONTACT US SO WE CAN CONFIRM AVAILABILITY AND OFFER YOU A DISCOUNT CODE. YOU MAY DO THIS VIA CHAT OR EMAIL [email protected] SEND US THE PRODUCT NAME AND WE WILL PROVIDE THE DISCOUNT CODE. WE PREFER CHAT TO GET RESPONSE. Does your dog keep barking when see someone visiting which annoys you so much? Take this ultrasonic anti-barking device home and train your dog instantly! This dog bark control deice features 3 adjustable ultrasonic frequency levels, which emit sounds that dogs can hear but will not hurt them, efficiently stopping your dog’s barking. 15KHz for small dogs, 20KHz for docile dogs, and 30KHz for large and naughty dogs. Equipped with 1500mAh battery, able to work about 40 days based on trigger 100 times per day after fully charged about 4 hours. Suitable for dogs from 6 months old to 8 years old. The device can be mounted with included self-tapping screws and anchors at garden fence, home, dog house, tree etc.. No worry about slight rainy day thanks to the IPX4 waterproof performance.