The right attractant can turn your Mosquito Magnet into an even more powerful mosquito killing device. If you live in the Southern regions of the U.S. or in Hawaii, where the main types of biting insect pests include the day-biting Asian Tiger Mosquito and other mosquito species as well as no-see-ums and black flies, the Lurex3 Refill Twin Pack is an effective as well as economical way to ensure you are getting the most out of your trap and providing your family with maximum protection against flying pests. Mosquito Magnet Lurex3, a patent-pending mosquito attractant, mimics naturally occurring human skin scents and odors that attract mosquitoes. It has been designed for use with all Mosquito Magnet Traps. The EPA-registered Mosquito Magnet Lurex3 proven to attract the Asian Tiger Mosquito. It also attracts other species of mosquitoes that may transmit diseases such as West Nile Virus, Encephalitis, and Heartworm.