The Thermacell Cambridge Mosquito Repellent Lantern effectively repels mosquitoes by creating a 15-foot zone of protection. Its ambient light and decorative design perfectly adorn your deck or patio and is ideal for use while entertaining guests, gardening, around the backyard, and more.Specifications and Features: No spray and no mess Scent-free and DEET-free Coverage: 15 feet No open flame, no smoky candles Lantern and repellent operate independently or together Decorative black lantern provides ambient lighting powered by warm LEDs Includes one 12 hour refill with 3 repellent mats & 1 fuel cartridge For single 12 hour refill use TV #876-557 For other refills use TV #672-412 or TV #217-236 Requires 3 AAA-batteries (Not included)