No spray, no messNo open flame, no smoky candlesScent-free and DEET-freeThe Thermacell MR300 Portable Mosquito Repeller is light and portable enough to take virtually anywhere outdoors, and creates a 15ft x 15ft protected mosquito-free zone, stopping them before they can bite or bother you.Its cordless, lightweight design makes it ideal for use while camping, fishing, gardening, and around the backyard.___