The Thermacell Patio Shield "Haze" Mosquito Repeller is a scent and flame-free solution for keeping mosquitoes at bay. With an EPA registration number of 71910-2, this heat-activated repellent is effective in keeping bugs away from your outdoor space. The blue fuel cartridge and repellent mats provide a 15ft coverage area, making it ideal for use during camping, hiking, and other outdoor activities. Enjoy a bug-free experience with this innovative and efficient mosquito repellent from Thermacell.