Thermacell SR-L Skeeter Reliever Lantern Up to 98% effective, providing a 15 x 15 foot mosquito free zone. Provides area protection -- not applied to the skin like lotions and sprays. No DEET. Silent and odor free. Portable, cordless, and easy to carry (weighs less than one lb). Uses a candle as it's heating source--no butane required.