Control unwanted barking the safe and effective way with this ultrasonic dog bark deterrent device. Using 25kHz high-frequency sound, this anti bark device for dogs helps stop barking, jumping, and other unwanted behaviors without shock collars or harm. With a 20ft range, it works indoors and outdoors as a reliable Dog control device, making it perfect for home use or even managing neighbors' barking dogs. Lightweight and easy to carry, this pet gentle ultrasonic dog trainer features a built-in LED light for convenient day and night use. It also works as a silent dog whistle to stop barking and a modern alternative to traditional clicker training. Recommended for dogs aged 6 months to 8 years, this no bark device for dogs is a simple, safe, and effective solution for better behavior and a quieter environment.