Rediscover the outdoors and reclaim your campsite from invasive mosquitoes without use of chemicals on skin, lotions, smoky candles or DEET. The Thermacell Mosquito Repellent Lantern is a durable, portable, dual-purpose camping lantern that keeps campsites, block parties and patios pest-free and well-lit. Turn it on… Mosquitoes Gone. Silent and convenient, the 225 Lumen LED lantern light and mosquito repellent can function independently or together. Thermacell repellent technology is DEET-free and has been evaluated by the EPA for safety and effectiveness. A heated mat silently releases scent-free repellent into the air creating a 15-foot zone of protection. Each fuel cartridge offers 12 hours of continual protection while each repellent mat offers 4 hours. The Thermacell Pathfinder Lantern comes with 1 battery-operated reusable lantern, 1 fuel cartridge and 1 max life repellent mat. The lantern requires 4 D batteries (not included) and has a 100% satisfaction guarantee.