Beacon Rat & Mouse Repeller Dual-action Electromagnetic technology Produces a high-frequency sound to drive mice and rats from your home Simply plug into wall socket Available as 1 Pack or 3 Pack A dual action triple pack mouse and rat repeller that uses the most up-to-date electromagnetic technology to drive mice and rats from your home. Simply plug into an unobstructed wall socket and it will send out a high-frequency sound that repels mice and rats. Covers 232 square metres / 2500 square feet and has a built-in night light. It is safe near children, cats and dogs.