Refills 4 butane cartridges, compatible with all Thermacell devices, including Mini Halo and Portable.
The heat generated by the butane cartridge inserted inside the device vaporizes the repellent allowing it to evaporate into the air, creating a 21m2 mosquito protection area in just a few minutes, making sprays and lotions superfluous.

• Package contains 4 replacement butane cartridges for 48 hours of protection. Each cartridge lasts 12 hours. Device and insecticidal plates not present inside this package
• Protective shield up to 21m2, proven effectiveness against tiger mosquitoes
• Wireless, smokeless, odorless, noiseless, open flame
• Thermacell devices only work properly with Thermacell refills