Keep mosquitoes out of the blind without pungent lotions or sprays. Silent and odor free, the Thermacell Mosquito Repeller creates a 15' diameter zone of bug-free comfort. Easy to use and easier to carry, a single butane cartridge heats an insect-repellent mat that releases a synthetic version of pyrethrum, a natural repellent found in flowers. (Please read the warning labels before using.) Includes a butane cartridge and 3 repellent mats. Unit measures 8" x 3". Holster sold separately. Imported.