MOSQUITO PROTECTION THAT WORKS: Thermacell effectively keeps mosquitoes up to 20FT away. Works fast, get max protection in 15 minutes. Easy to use. This Repellent cartridge is compatible with all Thermacell Rechargeable Repellers. Portable and allowed to bring on Airplanes. LONG LASTING DEFENSE: Scent-free refills provide on-demand, consistent repellent protection that doesn’t weaken over time. REPEL MOSQUITOES IN AIR, NOT ON YOUR SKIN: Repel mosquitoes without DEET sprays or lotions on your skin. Long lasting repellent cartridges are easy to replace. Scent-free, no smoke, no flames. PROPRIETARY FORMULA: Independently tested and EPA reviewed for safety & effectiveness. Repels biting mosquitoes, including those that may transmit Encephalitis, West Nile Virus, and Zika Virus. People and pet friendly. THERMACELL GUARANTEE: Backed by the Thermacell Guarantee. See packaging for details.