PetSafe Bark Control Collar
The Bark Control Collar helps your dog learn the difference between good barking (for protection) and bad barking (due to boredom or over-excitement). The bark collar picks up the vibrations from your dog's vocal chords as it barks. The vibrations cause the anti-bark collar to send an electronic signal (a static shock) to your dog. Your dog will quickly learn that barking causes the signals and that not barking is the way to avoid the signals. Lightweight collar ensures comfortable fit. Completely waterproof.