The Thermacell Refill Value 4-Pack is an essential companion for outdoor enthusiasts seeking effective and convenient mosquito protection. This innovative solution creates a 15-foot zone of defense against mosquitoes, allowing for uninterrupted enjoyment of outdoor activities. Unlike traditional repellents, Thermacell's refills are DEET-free, making them a safer choice for families and pets. The refills are powered by a heat-activated technology, eliminating the need for cords or batteries, and ensuring a scent-free experience without the use of smoke, flames, or harsh odors like those from citronella candles. Each pack includes 4 12-hour fuel cartridges and 12 4-hour repellent mats, providing up to 48 hours of protection. The repellent mats are easy to use and change color to indicate when it's time for a replacement, ensuring maximum effectiveness and convenience. The Thermacell refills are compatible with all fuel-powered Thermacell repellers, except for the Backpacker model, offering versatility across different devices. The repellent formula used in Thermacell's mats is inspired by compounds found in plants that naturally repel insects, making it an environmentally friendly choice. This plant-inspired formula has been independently tested and reviewed by the EPA for safety and effectiveness, ensuring it's a reliable option for mosquito protection. Backed by the Thermacell Satisfaction Guarantee, this refill pack promises worry-free outdoor adventures, whether you're camping, hiking, or simply enjoying an evening on your patio. Wide Coverage: Provides a 15-foot zone of mosquito protection for uninterrupted outdoor enjoyment. DEET-Free: Offers a safe, eco-friendly alternative to chemical repellents, ideal for family and pets. Heat-Activated: Utilizes innovative heat-activated technology for scent-free mosquito defense without cords or batteries. Plant-Inspired Formula: Features a synthetic allethrin formula inspired by natural plant extracts, tested for safety and effectiveness. Satisfaction Guaranteed: Comes with the Thermacell Satisfaction Guarantee, ensuring your outdoor experiences remain mosquito-free.