Lotions. Sprays. Wristbands. There's all kinds of individual mosquito repellants out there, but the Thermacell Backpacker Mosquito Repeller shields the whole campsite. Fueled by a standard camping gas canister, the repelling agent is activated by a gentle heat, creating a 15 x 15 foot mosquito-free dome that lasts 90 hours on just 4 ounces of gas. The lightweight design makes it just as east to pack as a bottle of spray, while its refillable mats keep the mess off of you and your gear.