The BARYAAB 25kHz Ultrasonic Dog Trainer and 23-36ft Bark Control Device offer a humane and efficient solution to stop your dog's incessant barking. This portable tool is designed to teach dogs to associate high-pitched sounds with the location of a source to reduce barking. The bark control device extends up to 23-36ft, providing coverage for outdoor areas. It's compatible with the ultrasonic trainer, allowing you to reward good behavior while deterring unwanted barking. This product is a compact and easy-to-use alternative to shock collars or citronella sprays, with a USB rechargeable battery ensuring a long-lasting and eco-friendly experience. Its LED flashlight adds an extra benefit for nighttime training or walking sessions. With the BARYAAB as your ally, you'll have a well-behaved, calm, and obedient dog in no time.