Ultrasonic Dog Training Whistle Barking Deterrent with Lanyard The ultrasonic dog whistle is the perfect way to train young dogs to follow your instructions, come and also to help stop excessive barking. The ultrasonic whistle is silent to humans and can be heard by dogs from a distance of up to 25m. The sound frequency can easily be adjusted to suit your dog’s sound sensitivity by removing the whistle from the handle and using the screw adjustment. The whistle includes a lanyard so you can keep it close to hand at all times.
