The Thermacell Camping Metal Edition Mosquito Repeller effectively repels mosquitoes by creating a 15-foot zone of protection. Its sleek brushed metal design will elevate any patio or deck décor while keeping away pesky mosquitoes from biting and bothering your guests. It provides proven Thermacell fuel-powered technology, in a compact design for camping, fishing, sports games, or the backyard. This repeller has no cords or batteries and is easy to use. Simply insert a repellent mat and twist in a fuel cartridge, then turn it on. The fuel creates heat. A view window lets you check for an orange glow to ensure the heat is on. Heat activates the repellent in the mat. After 15 minutes, a mosquito protection zone is formed. The repellent mat turns white after about 4 hours indicating it’s time for the mat to be replaced.