Thermacell Rechargeable Mosquito Repeller Refill - 72 hours - Stay protected for up to 20 feet with Thermacell's 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.