ThermaCELL MR300G insect repeller, olive drab

The Finnish summer is beautiful - never-setting sun, lush green nature, local populace plastered senseless for the whole two months of it and the air is full of blood-sucking little insects.

Notification 12th JUN 2021: We have discontinued the sale of ThermaCELL products because of suspected harm to pollinating insects and aquatic life. The decision applies indefinitely.

ThermaCELL is among the best possible solutions against mosquitos - a portable thingie that gives you some 5x5 m / 16 ft x 16 ft mosquito-free area anywhere you go.

Operating principles

The device works by using butane to heat a pad, which releases D-allethrin into the air. There's no open flame involved, just a bit of warmth. It doesn't kill mosquitoes but repels 98% of them from a 5x5 meter / 16 ft x 16 ft area.

Full effect and coverage are achieved 10-15 minutes after turning on. Wind and rain reduce the effect, but insects don't like these either. In case of a breeze, you can place the ThermaCELL upwind and close to the ground. Just keep in mind there's invisible stuff coming out and common sense helps you place the device optimally.

One pad is good for 3-4 hours and a butane cartridge for 9-12 hours of operating. Turn off to stop the gas flow entirely and the pad will also last longer.

Warnings

Contains d-allethrin, 0.5 g / pad. D-allethrin is dangerous especially to cats.

Only use the appropriate unmodified device. Only use outdoors. Do not use indoors, inside tents, and other closed spaces. Improper use may produce higher concentrations that may cause irritation. If this happens, stop the exposure, get fresh air, and rest.

Do not let children or other animals sniff or eat the device or the repellent mats.