Innovative Ultrasonic Dog Bark Control Device: Advanced ultrasonic technology, effective on most dogs to reduce unwanted behaviors (excessive barking, scratching, fighting, biting). Equipped with 2 frequency modes (fixed/variable), it adapts to various types of dogs. Targeted high-power ultrasound, without harming the animal. 3 ADAPTATION MODES FOR PRECISE CONTROL: This dog bark control device automatically detects barking in a controlled area (up to 10M) and emits anti-dog ultrasound adjustable in 3 levels (10 kHz - 30 kHz). Whether your dog barks softly or loudly, you can select the appropriate mode to quickly stop its behavior. This flexibility makes our dog bark control device a versatile tool for all owners. SAFETY AND HUMANITY GUARANTEED: Unlike unpleasant-smelling sprays or electric shocks, our dog bark control device uses only ultrasound that is harmless to dogs and undetectable by the human ear. It simply stimulates the dog's attention without pain, making it a safe and