Thermacell Backpacker Repeller is lightweight, compact & portable. This lightweight repeller uses a camping gas canister (isobutane propane mix) to heat the Thermacell Repellent mat to create a 15' x 15' protection zone. The natural chrysanthemum flower ingredient will repel mosquitoes, black flies and other biting insects for up to 160 hours with an 8 oz. canister. With an integrated Piezo lighter & optimal performance under 8000 ft. elevation this repeller is a sure thing to take on any backpacking trip.