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How it Works:

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 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. Additionally, an ultrasonic signal is broadcast by sweeping various frequencies and with a similar on-off cycle. This ultrasonic technology has been generally regarded as having the effect of repelling pests (particularly rodents), especially in open areas and in relatively close proximity to the source of the sound transmissions.