Keep pesky mosquitoes at bay with the OFF! mosquito lamp. This refillable lamp uses a heated diffuser to release mosquito repellant when the included candle is lit. Each diffuser and candle can provide up to six hours of protection, allowing you to comfortably enjoy dining or entertaining outdoors without being bothered by mosquitoes. This mosquito lamp is designed for outdoor use only and should never be lit in a tent or enclosed space.