For the backyard and beyond, Thermacell Multi Insect Repellent Refills keep your Patio Shields, Lanterns, and Portable Repellers running for the long haul, with no batteries or cords needed. Compatible with all fuel-powered Thermacell repellers (except the Backpacker). The first and only EPA-registered area repellent for black flies and no-see-ums, these refills protect from mosquitoes, black flies, and no-see-ums (gnats). Not for the common house fly.

Thermacell Multi-Insect Repellent creates a 15-foot zone of protection against mosquitoes and a 10-foot zone of protection against black flies and no-see-ums. Ideal for camping, in your backyard, or whenever you need protection.
Proven repellency against mosquitoes, black flies, and no-see-ums only - without DEET sprays or lotions on your skin. No smoke, flames, or harsh odors like citronella. Enjoy maximum protection in 15 minutes.
Thermacell portable fuel-powered devices don't require cords or batteries. Emits scent-free repellent that drives away mosquitoes, black flies, and no-see-ums. Powered by a safe and compact 12-hour fuel cartridge (included).
Our synthetic prallethrin formula is inspired by repellent extracts found in plants. Independently tested and EPA-reviewed for safety & effectiveness. People and pet friendly.
Backed by the Thermacell Satisfaction Guarantee. See packaging for details. (Not intended for other insects – only effective against mosquitoes, black flies, and no-see-ums.)

*For Outdoor Use Only

Includes: Two 12-hour fuel cartridges and six 4-hour repellent mats. Compatible with all fuel-powered Thermacell repellers except the Backpacker.

Thermacell Refills 24 Hour