# Stay Mosquito-Free Anywhere: Thermacell Backpacker Mat-Only Refills for Ultimate Protection Thermacell Backpacker Mat-Only Refills effectively repel mosquitoes by creating a 15-foot zone of protection when used with the Thermacell Backpacker Mosquito Repeller. This Refill does not include fuel cartridges. Always be prepared by keeping an extra mat in your tent, backpack, garage, or tackle box, ready when you need it. ----------- ## Product Specifications - Active Ingredient: 21.97% D Cis Allethrin - Hours of Protection Included: 48 hours - Refill / Cartridge Type: Mat - Weight: (12) Mats 1.0 ounce