For all your outdoor adventures, Thermacell Portable Mosquito Repeller Detachable Clip lets you explore the outdoors hands free. Use the Detachable Clip to attach your portable repeller to belts, gear, cross body carry bags, shoulder straps, and more. Perfect for campers, fishermen, hunters, boaters, and outdoor lovers who need a break from mosquitoes. Compatible with the MR300 and MR450 Portable Mosquito Repellers. Mosquitoes are no small problem - they can ruin a good time with painful bites, bothersome buzzing, and days of itching afterward. Until now, sprays, lotions, torches, DEET and citronella have been the only options for fighting mosquitoes. We started Thermacell because we wanted a better way to fight mosquitoes. From humble beginnings, our team of entomologists, researchers, and outdoor enthusiasts has over 100 years of combined experience fighting mosquitoes.