Thermacell Repellents MR300MO: The Thermacell MR300 Portable Mosquito Repeller effectively repels mosquitoes by creating a 15 ft protection zone. The MR300 Repeller can be taken virtually anywhere outdoors to repel pesky mosquitoes, stopping them before they can bite or bother you. Features include- Quiet ignition, reengineered grill and switch, improved ergonomics and accessory mounting system. Portable and lightweight, no spray and no mess. Scent-free and DEET-free. Includes fishing clamp, belt clips, three mats and one fuel cartridge.