ThermaCELL E-1 Earth Scent Mosquito Repellent 12-hour Refill Pack for Appliances and Lanterns(2Pack) Earth Scent is designed to smell like raw earth or dirt to mask your scent while hunting or fishing, not to be used in backyard settings Contains (1) butane cartridge and (3) repellent mats for (12) hours of biting protection Provides 15-foot by 15-foot "Zone of Protection" against bugs or 225 square feet when used with a ThermaCELL appliance or lantern Effectively repels mosquitos, black flies and other flying, biting insects All ThermaCELL products come with a one year warranty