Backpacking, hiking and camping are about adventure, people, memories and experiences, but never about mosquitoes. Thermacell understands this balance and offers the 100% Satisfaction Guaranteed Backpacker Mosquito Repeller 2.0 to keep love for the great outdoors alive. Lightweight and portable, the mess-free, DEET-free Backpacker Repeller turns campsites into a 15-ft zone off limits to pesky mosquitoes. Turn it on… Mosquitoes Gone. The fuel-efficient unit runs up to 360 hrs on a 16 oz fuel canister (not included). Mats last 4 hours each. In just minutes of operation, the repeller transforms 225 sq. ft. of fresh air from biting misery to true majesty. Easy to pack and use, this repeller is the perfect mosquito solution to any on-the-go adventurer. TIPS: Only use pressurized self-sealing (iso)butane and propane fuel mix, never use 100% propane or refilled canisters, and only use canisters with valves designed to the EN417 specification. Other canisters may not provide proper fuel flow.