The STOP WOOFER Ultrasonic Dog Trainer is a new, sealed device designed to help train dogs by emitting ultrasonic frequencies that are designed to deter barking. With its specific function as an anti-barking device, this trainer is intended to provide a humane and effective way to train dogs to stop barking excessively. The brand, Stop Woofer, specializes in this type of sonic trainer, making it a reliable option for pet owners looking to improve their dog's behavior.