Thermacell Refill Pack 48 hr.

Thermacell 48-hour refill pack.

It includes 4 butane gas cartridges and 12 repellent mats.

Suitable for all ThermaCELL repellents.

Thermacell mosquito repellent works by changing refills that are saturated with allethrin.

Allethrin is a synthetic analog or chemical copy of pyrethrin, found in chrysanthemums, and affects the nervous system of mosquitoes and other insects.

The refill pack includes blue mats, which need to be replaced when they lose their blue color and turn white.