FAQ Will it be activated by another dog nearby? No. The Bark Controller is activated by the vibration of the dog's larynx so it cannot be set off by any other dog. How long does the battery last? On average about 1 month. How big is it? The receiver box weighs just 3.4oz and it can be used on virtually any breed and size of dog. How quickly does the dog learn to stop barking? Usually within a day.'>