Dogs are actually man's best friends, but sometimes they can be quite annoying when they start barking. It's okay once in a while, but if Fido has a barking problem, something needs to be done. The Anti-Bark Device handheld training aid emits a powerful (but harmless) ultrasonic sound and teaches your dog to associate the unpleasant sound with disobedience commands to stop barking. It is also effective at deterring other destructive behaviors such as chewing on furniture and jumping on guests. You control the handheld remote so you can incorporate it as a tool into your workout routine. A whopping works up to 50 meters away. The Anti-Bark Device trains dogs to stop annoying barking (boredom and attentional barking), but is designed to have no effect on instinctive or protective barking! Harmless and humane ultrasonic to deter dogs from annoying and aggressive behavior. Lightweight and portable handset. Operates up to 50 feet, requires batteries (NOT INCLUDED). The LED flashlight also acts as a battery indicator. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.