UPGRADE ULTRASONIC TECH: Stop excessive, noisy dog barking by emitting an ultrasonic sound to silence the dog. More effective than old version deterrents and waterproof.
HUMANE&HARMLESS:Safe to your dogs of any size, other pets, plants, and of course yourself and your loved ones.
WELL-DESIGNED MINI SHAPE:Can be hung on a tree, indoor, outdoor wall or fence post to stop any dogs barking(within range);
FOR DOGS OF ANY SIZE: Uses high-frequency sound that works to reduce excessive bark of any size dogs within hearing range
NOTE: It needs 9 V batteries - (batteries are not included), a sound sensitive microphone: triggering ultrasonic soundDesigned for outdoor use, outdoor ultrasonic barking device