Mosquitoes ruin everything. Thermacell’s award-winning technology keeps mosquitoes away by creating a 15FT protection zone around you. Our proprietary formula precisely targets mosquito sensors, driving them away. With consistent protection that doesn't weaken over time, Thermacell helps you live your best outside life without the use of bug sprays or lotions on your skin. Always be prepared by keeping extra cartridges and mats in your tent, backpack, garage, or tackle box ready when you need it. This refill pack is compatible with all Thermacell fuel-powered repellers (except the Backpacker). Comes with 72 hours of mosquito repellent and fuel. From the Manufacturer Contains Cartridge and Mats. For use with ThermaCell® Mosquito Repellent Products.1 Butane Cartridge - Net Wt. 12 gm 3 Insect Repellent Mats - Net Wt. 0.08 oz Each