Dog Barking Control Devices: Can be used as a dog training tool, to stop barking and to correct efficiently bad and unwanted behavior like excessive barking, digging, eating unsafe food, fighting, leash pulling. Also can be used as a dog repeller to discourage aggressive dogs from approaching you or your doggie and as a bright LED flashlight, suitable to use while walking your dog outdoor even at nightEffective Up To 20 Feet: Did your dog just run off? It s ok, hit the button and they ll stop from anywhere up 20 feet. Then call them back and reinforce the Good behavior with a treat. And, if you have neighbors dogs who bark, point this anti barking training gadget in their direction as a deterrent and in 10 days they might have learned the new behavior tooNot suitable for deaf or hearing impaired pet.Train Them Safely: Before dogs develop the bad habit of barking at others, or an attack mindset, an ultrasonic dog trainer can prevent and control the behavior from the day they turn 6 months oldAnd while a regular dog training clicker is great for training in positive behaviors, the STNICK handheld anti-bark training will chill out all the negative ones, so you get greater results in puppy trainingCan I Scare Dog Away? While these anti barking devices feature a sonic anti-barking deterrent and bright Flashlight to shine into eyes, you cannot use it as a safety device against attacking or aggressive dogs They may not be trained or conditioned, and you can never know exactly how tough or angry the other dog is. Use dog barking control devices as a noise repellent or training tools only.Ultra-Bright (Built-In Flashlight) -- This anti-barking device not only helps improve natural behaviors but also keeps you safer in the dark with a bright LED flashlight built into the front. Great for nighttime walks or in low-light conditions .Package included:1 x Dog Barking Control Devices