PEST A CATOR 2000 is an electronic device that utilizes electromagnetic technology and was specifically engineered for use in the larger home (generally regarded as approximately 2000 square feet), apartment or condo. The device is designed to cause a slight phase shift (delay) in the timing of the electromagnetic field which surrounds the wiring in the home. This phase shift is the primary reason that this technology has been shown to have some kind of an effect on pests, and more particularly upon rodents. The device functions by broadcasting an electromagnetic signal in a pulsing fashion with an on-off cycle in order to avoid the numbing effect obtained with any constant sensory stimulus. Multiple units are needed in larger areas or multiple stories. As with the PEST A CATOR 1000, the patented pulse technology allows it to be plugged into any 110V outlet within the home. Completely maintenance free - not a trap - not a chemical. Safe to use around children and household pets (except rodent-type pets), this product may help in reducing your monthly exterminator costs and is so easy to use. Note: As with any pest management technique, no one method is completely effective, and a program of integrated management involving a variety of techniques and practices is most likely to provide the desired results