How Thermacell products work
Thermacell devices use ActiveShield™ Technology to release a synthetic pyrethroid into the surrounding air. Rechargeable devices use metofluthrin, while fuel-powered devices use allethrin. The vapor creates a protective zone 15 to 20 feet wide. No sprays touch your skin. No scent. No DEET.
Easily create zones to effectively repel mosquitoes.
Push a button. Thermacell activates. Mosquitoes stay out.
Mosquito Repellent Product Lines
Each product category features trusted Thermacell technology to elevate your favorite outdoor experiences.
E-ZoneGuard Series
Effortless mosquito protection, thanks to a rechargeable lithium-ion battery and one-touch activation.
Fuel-ZoneGuard Series
Butane-powered and always ready—no charging, no batteries, just mosquito protection whenever you need.
LIV On-Demand Installed System
The LIV Series brings smart, customizable mosquito protection for the ultimate outdoor oasis.
Scientifically Proven
Thermacell products are developed and tested using decades of mosquito research and field evaluation. Products are evaluated against top disease-carrying mosquito species using EPA-recognized testing standards. The active ingredients used in Thermacell repellents, including metofluthrin and allethrin, have been reviewed and registered by the EPA for their intended uses as spatial repellents.
BATTLE-TESTED
We test our products in Florida's buggiest spots, where mosquito counts can reach up to 1,500 per hour.
EPA REVIEWED
Our proprietary formula has been independently tested and EPA-reviewed for safety and effectiveness.
EXPERT APPROVED
Recommended by outdoor experts, professional guides, hunters and campers.
EDITOR-BACKED
“Thermacell Products stand out by actually being effective.”
- NYT Wirecutter
Industry Leading Zone Coverage
Thermacell rechargeable devices create a repellent zone up to 20 feet in diameter. That protection comes from a small dose of metofluthrin dispersed into the air by controlled heat, with no chemicals applied to skin. In side-by-side comparisons with citronella candles and competing area repellents, Thermacell consistently reduced mosquito presence more effectively.
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Mosquito repellents work by blocking or disrupting the cues mosquitoes use to find people. Topical repellents mask scent signals on the skin. Spatial repellents like Thermacell disperse a pyrethroid vapor into the surrounding air, making the zone uncomfortable for mosquitoes to enter or remain in.
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Thermacell devices have low acute toxicity to mammals when used outdoors as directed. Rechargeable Thermacell devices use metofluthrin as the active repellent ingredient. Fuel-powered Thermacell devices use allethrin as the active repellent ingredient. Dogs tolerate both synthetic pyrethroids well at normal use levels. Thermacell's data is thoroughly reviewed by the US EPA.