Attack pests where they live between walls, floors and ceilings. This is the perfect complement to your in-room ultrasonic repeller, because this revolutionary device uses Electro-Magnetic technology and your household wiring to drive out: Mice, Rats, Roaches and other insects. Here's how it works: Just into any standard 110v electrical outlet. Alters the normal magnetic field in your house wiring to drive rodents and vermin crazy! (magnetic "pulses" disorient pests' nervous system). Silent operation. NO chemicals, NO messy traps... just an effective device that penetrates into walls, drawers, cabinets, baseboards and dark corners to drive pests OUT. Think about it - rodents and insects don't set up house in the middle of your kitchen floor; rather, they nest in nooks, crannys & in between walls where traps and chemicals can't reach. Will not effect computers and household appliances. One unit covers about 2,000-square feet, draws about same power as 60w bulb. University tested, UL listed, EPA registered, two year warranty. Ideal for home, office, shops, restaurants, barns - any structure with internal electrical wiring. New Sunbeam DUAL TECHNOLOGY unit has Ultrasonic and Magnetic in the same easy to install unit. ULTRASONIC will blanket the room with powerful sound waves while the ELECTROMAGNET technology works in the walls.