Tattle Tail Vibration Alarm helps train the pets to stay off or away from any particular object in the house. Place it on the counter top, couch, bed, etc. As soon as the pet touches the object, the Tattle Tail™ sounds a loud 2 second alert, startling the pet and letting you know he is up to no good. Runs on a 9V battery (included) and features a sensitivity switch for optimum performance on any surface. Note: Training sound may be heard by the human ear.