The NEW cordless Mosquito Magnet Independence has been designed for the homeowner who needs to protect up to a 1 acre area. Its one-button operation and easy assembly make using the Independence simple and convenient. With 4 âCâ batteries (included), no external electrical power is needed, allowing placement of the unit away from the family area yet near the mosquitoes’ breeding and resting areas. This proven mosquito trap features patented Counterflow Technology to help you protect your family, pets and guests from pesky, biting mosquitoes, including those that may carry West Nile Virus, Encephalitis and other mosquito-borne diseases. Other biting insects that are trapped include midges, no-see-ums and black flies. Backed by 360 degree Consumer Support.