Retain your sanity during long-term outdoor activities with the Thermacell Mosquito Repellent Decorative Outdoor Cordless Lantern. Whether on a week-long camping trip or simply enjoying the backyard sun, this charming lantern is an indispensable accessory. Its decorative design is both durable and functional, featuring four LED lights to provide ample illumination whenever you need it. The unit also doubles as a pest-repellent device, servicing a maximum 15 x 15 foot area and keeping you free of troublesome insects. The top of the unit allows installation of a butane burner cartridge, providing flame-free power to the repellent mats. The mats use a specially-designed chemical repellent designed after a naturally-occurring floral compound that keeps away mosquitoes, flies, and other pests while remaining undetectable to pets and humans. The butane burner works for up to 12 hours while the three included mats provide four hours of service. Four AA batteries are required (not included). The repellent creates a 225 square foot area of protection, using a chemical copy of a naturally-found repellent in flowers that’s harmless to humans and pets that requires no open flame to function.