Stake out your own bug-free zone with Thermacells Backpacker Mosquito-Repellent Appliance. Attaches to any isobutane/propane fuel canister to create a 225-sq.-ft. zone of protection. Checking in at just 4 oz. and using fuel that most backpackers and campers already have in their pack, theres no reason for outdoor adventurers to accept pesky insects as part of the experience. Efficient design runs for 90 hours on a 4-oz. fuel canister (not included). Built-in piezoelectric starter for match-free starting. Safe to use around all your gear. Water-resistant nylon carry pouch. Includes appliance and three repellent mats. Fuel canister sold separately. 3.82H x 2.64W x 1.97D. Wt: 4 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Repellent Devices.