Thermacell Max Life Mosquito Repellent Refills keep mosquitos at bay for 12 hours, up to three times longer than the original Thermacell mats. Max Life Refills repel mosquitoes by creating a 15-foot zone of protection in fuel-powered Thermacell repellers, lanterns, and torches (not compatible with rechargeable and backpacker repellers). The no spray, no mess, no smell, and DEET-free mosquito repellent help make your fishing evenings on the boat, bank, or dock more enjoyable. Replace mats less frequently and keep your fuel-powered insect repellent Thermacell devices working against pesky bloodsuckers with authentic Thermacell Max Life Mosquito Repellent Refills. For use in fuel-powered Thermacell repellers, lanterns, and torchesIncludes 48 hours of mosquito protection refillsPackage contains: 4 Max Life 12-Hour repellent mats and 4 fuel cartridgesNo spray and no mess; scent-free and DEET-freeManufacturers one-year limited warranty