Humutan Anti Barking Device, 2019 New Bark Box Outdoor Dog Repellent Device with Adjustable Ultrasonic Level Control Anti Barking Device Durable and Weatherproof: Deter your own dog or your neighbour's dog from barking Anti Barking Device Adjustable Ultrasonic Level Control: Safe for small medium large dogs. Emits harmless, but effective sound to control excessive barking Anti Barking Device Hanging Rope Included: Designed to hang/mount on a tree, wall or fence post to keep your own dog or your neighbors dog from barking. Hanging rope included Anti Barking Device Effective Range Up to 50 Feet: Outdoor Bark Control is automatically activated when it detects barks up to 50 feet away. It then emits ultrasonic sound. Anti Barking Device 100% safe, humane and professional way to train your dog to stop barking 9V Battery Not Included