ThermaCELL Mosquito Repellent Personal Pest Control Appliance & Refills Value Pack Value Pack contains 2 Appliances, 7 ThermaCELL Cartridges, and 21 Repellent Mats 15-foot by 15-foot "Zone of Protection" against bugs or 225 square feet Effectively and silently repels mosquitos, black flies and other flying, biting Cordless, pocket-sized, portable and lightweight appliance 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