The DogIt Silent Dog Whistle by Hagen is a high pitch training whistle with ultrasounds. Its more effective than your voice! Your dog will hear the high-pitched whistle from a farther distance and you don't have to strain your vocal chords by shouting.

• High pitch ultrasound dog whistle
• Great training and behavior control tool
• Solid, chrome plated construction

Of course, you must train your dog first to know how to react when they hear the whistle.