Dog Whistle, 2 Pack Adjustable Ultrasonic Dog Whistle to Stop Barking Neighbors Dog, Recall Training, Professional Silent Dog Whistles to Stop Barking HOW TO TRAIN YOUR DOG?: Each time you use different flute methods to specify the commands such as Do not move, Sit down and Come. For example: "Do not move" "Two short sounds" "Sit down" "One long and one short". You can easily teach your dog unlimited commands by adjusting the different ultrasonic frequencies. Please keep your whistle command consistent, when your dog does it right, give him a snack reward, approach to make your dog a listening and obedient friend. You can adjust the pitch to get the right frequencies, loosen the sonic adjustment screw while blowing the air in from the air inlet, turn the adjustment lever to adjust to the optimum pitch. After the adjustment lever is turned, tighten the sonic adjustment screw. This is a ultrasonic dog whistle that quickly stops barking and helps you teach your dog obedience and learn basic skills, like sit, paw, lay down, up. ANTI-LOSS DESIGN: Our silent dog training whistles come with a high-quality lanyard and special lock nut & cover, it allows you to take this dog whistle to anywhere without worrying about losing them. Issue commands and gets in touch with your dog whenever needed. PROFESSIONAL AND SAFE: Our ultrasonic dog whistle is made of safe high-quality stainless steel, The ultrasonic waves from the dog whistle will not damage your dog's hearing during training and will not cause any health problems for your dog. This dog whistles that makes dogs stop barking can be used on any common breed of dog.