This Thermacell Mosquito Repellent Refill contains 4 butane cartridges and 12 repellent mats. Each cartridge works for up to 12 hours to provide a total of 48 hours of repelling power. Original Thermacell Mosquito Repellent Refills effectively repel mosquitoes by creating a scent free 15-foot zone of protection when used in fuel-powered Thermacell Repellers. Ideal for use while you are camping, hunting, fishing, gardening and around the backyard.

• Repels mosquitoes, black flies and no-see-ums
• For use in fuel-powered Thermacell Repellers, Lanterns, and Torches
• Each butane cartridge lasts for up to 12 hours
• Each repellant mat lasts up to 4 hours
• Refilled products can be switched off to be used at another time
• Excellent for hunters