Product Description The Thermacell M48 Backpacker Mosquito Repellent Mat-Only Refills are designed to keep you protected on your most demanding outdoor adventures. Compatible exclusively with the Thermacell Backpacker Mosquito Repeller, these mat refills create a powerful 15-foot zone of protection against mosquitoes without the use of DEET sprays, lotions, or harsh-smelling citronella. Each pack contains 12 repellent mats, delivering up to 48 total hours of mosquito protection. The mats are scent-free and feature a heat-activated formula that begins working within 15 minutes. The active ingredient, allethrin, is a synthetic version of a naturally occurring repellent found in chrysanthemum flowers, making it both EPA-reviewed and plant-inspired. No spray, no mess, no smoke - just reliable, effortless mosquito control for camping, backpacking, and outdoor activities. Note: Fuel cartridges are not included with this refill pack. Product Highlights 15-Foot Zone of Protection: Creates a scent-free, DEET-free mosquito repellent zone up to 15 feet in diameter for wide-area coverage outdoors. 48 Hours of Total Protection: Includes 12 repellent mats, each lasting up to 4 hours, for a combined 48 hours of mosquito-free outdoor time. Plant-Inspired Allethrin Formula: Uses a synthetic version of allethrin - a repellent extract inspired by chrysanthemum flowers - independently tested and EPA-reviewed for safety and effectiveness. No Spray, No Mess, No Odor: Heat-activated technology emits scent-free repellent with no skin contact required, no flames, and no harsh odors like citronella. Thermacell Genuine Refills: Scientifically proven to work with Thermacell Backpacker Repeller devices; mats visually change color to indicate when it is time to replace them. Specs Brand: Thermacell Model Number (MPN): M48 UPC: 843654000725 Active Ingredient: Allethrin (synthetic, plant-inspired) Number of Mats: 12 Protection Per Mat: Up to 4 hours Total Protection: Up to 48 hours Protection Zone: 15-foot radius Scent: Scent-Free DEET-Free: Yes Compatible Device: Thermacell Backpacker Mosquito Repeller only Fuel Cartridges Included: No Item Form: Mat Refills Target Species: Mosquitoes Product Dimensions: 5.25 x 4.25 x 1.75 inches Item Weight: 1.6 ounces Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>