The citronella and cedar formula of TIKI Brand Ready 2 Light BiteFighter Torch Fuel provides proven mosquito repellency. The convenient, prefilled canister fits most TIKI Brand torches and lasts up to 5 hours. Simply remove the cap, ensure 3/4 in. of wick shows at the top, place the canister in the torch, light and enjoy a fun backyard or patio experience with relaxing natural flame ambiance. When the canister is empty, dispose of and replace with a new TIKI Brand Ready 2 Light canister. TIKI Brand Ready 2 Light canisters are not refillable. Based on studies using CO2-emitting mosquito traps which demonstrated over 50% reduction in captured mosquitoes compared to untreated controls. Efficacy may be affected by weather conditions, torch placement and individual physical factors.