The Thermacell FuelZoneGuard Refill Kit is designed to extend the runtime and effectiveness of compatible fuelpowered Thermacell repellers, delivering consistent area protection without sprays or direct skin application. Using a heatactivated system, the refills disperse a scentfree vapor that creates a protective zone of up to 15 feet against mosquitoes. The proprietary formula, containing 21.97% dcis allethrin, is EPAreviewed and independently tested for performance and safety when used as directed, making it suitable for use around people and pets in outdoor environments.This kit includes ten 12hour fuel cartridges and thirty 4hour repellent mats, providing extended coverage for repeated use in camping, hunting, or backyard settings. Compatible with all Thermacell fuelpowered systems except Backpacker models, the refills are easy to install and activate with pushbutton operation on the host device. The system operates without smoke, open flame, or DEET, offering clean, lowmaintenance insect protection designed for reliable, longterm outdoor use.Compatible with all fuel-powered Thermacell repellers except rechargeable models