Enjoy the outdoors more with the Thermacell Rechargeable Mosquito Repeller Refill. It's compatible with all Thermacell rechargeable Repellers and provides a 20-foot zone of protection for up to 36 hours per refill. Perfect for keeping your campsite or patio pest free. Mosquito Repeller Refill 20-ft. zone of protection 72 hours of continuous protection Heat-activated, but no smoke, flames or strong scents Compatible with all Thermacell rechargeable Repellers 2 Pack of 36-hour refills Order today!