The BugBand motorized Portable Diffuser contains 3 replaceable cartridges of high concentrate Geraniol and a battery-operated fan. Geraniol vapors are released to form a protective vapor barrier in a given area. Small yet powerful Geraniol insect repellent protection! Single replaceable cartridge will repel insects for up to 120 hours. Effective coverage area: 200-300 sq ft. Battery operated - 3 AA batteries (not included).