Stay protected for up to 20 feet with our most advanced repellent refill ever. Thermacell Rechargeable Repellent Refills are compatible with all Thermacell rechargeable repellers, including the E-Series and Radius Zone Mosquito Repellers. Scent Free, No Mess, and Highly Effective. Features: Dependable Mosquito Repellent Refills - Fully sealed, travel-friendly Rechargeable Mosquito Repellent Refills are compatible with rechargeable Thermacell devices only (E-Series and Radius). No Spray, No Mess, Scent-Free. Thermacell Rechargeable Mosquito Repellers deliver powerful and effective defense against mosquitoes without spray, mess, or scent. No Chemicals on Skin -Rechargeable Mosquito Repellent Refills are scent-free and do not contain DEET. 36-hour refill only for Thermacell Rechargeable Repellers use. Package contains: One 36-hour refill