With a contemporary, slimline and discreet design, our dual-action indoor repellers are a simple, humane and mess-free pest control solution. It emits either ultrasonic waves over 2,500 square feet, or electromagnetic pulses through home wiring to discourage pest presence in the home. Ultrasonic and electromagnetic settings LED Light cleverly displays current setting Targets rats, mice, spiders, cockroaches and ants Harmless to pets, children and pregnant women