I hear of this before: I wont used it but my friend started using it with hers
Ultrasonic Dog Chaser - the latest ultrasonic technology, the Dog Chaser produces a discomforting but not harmful high frequency sound, audible to dogs but not to humans. Help stop the approach of unwanted dogs at up to Also a useful aid in training dogs.
One of the best ways of taming this behavior is to teach him to respond differently when the doorbell rings. The easiest way is by overloading the dog with the doorbell sound when no body is there so that the dog eventually learns that the doorbell ringing isn't necessarily what he thinks. He will start to associate this sound with something other than his initial thought |