Multifunctions: Except as a pet training tool, you can also prevent dog attacks, suitable for training many kinds of dogs, such as: B. Pets, dogs in police and shepherds, suitable for outdoor work, travel and night patrol. Note: May not be effective on large dogs and fierce dogs Ultrasonic Design: Based on the theory that ultrasonic dog trainer can effectively train your dogs to be obedient and stop some unwanted behaviors like barking, digging, chewing and more, they are harmless to both humans and pets. The sound is only audible to pets . Finally turn on the switch and it can work well. If necessary, they can also serve as a flashlight. A notice: The effective range of this product is 20 feet
