Global Instruments Larger Areas Pest A Cator 2000 Electromagnetic Rodent Repeller F Aids in repelling rodents by using a pulse technology to send silent pulsing signal through your homes wiring Plugs into standard electrical outlet; multiple units are needed for multiple stories; keeps your family safe and your home clean Safe for family, pets (except rodent pets) and computers Guaranteed to aid with rodents; tested to be effective on mice and rats Not a chemical, poison or trap