This portable, light weight biting insect repellent produces a scent that biting insects hate, but is pleasant to humans. The repellent cartridge contains beads made with Geraniol, a naturally occurring plant oil. Effective to repel mosquitoes, biting no-see-ums, and some biting flies! Just slide one of the replaceable repellent cartridges onto the Bite Shield+ and turn on the battery-operated unit. The super quiet fan distributes the scented repellent to give you an umbrella of protection from biting insects. Tested and developed by a major Florida University. Features No messy sprays or creams Up to 15 ft. radius of coverage outdoors University tested effective Two repellent cartridges included Operates on two "AA" batteries (not included) Standard AC adapter available for direct plug-in (sold separately) Perfect for any outdoor activity Up to 2000 sq. ft. of coverage indoors Each cartridge offers over 120 hours of use
