The Thermacell Mosquito Repeller system effectively repels mosquitoes, black flies, and other biting insects by creating a 15 x 15-foot zone of protection for bug-free comfort. Ideal for use while you are camping, hunting, fishing, gardening, and around the backyard. Make sure your Thermacell Mosquito Repellent keeps protecting you from those pesky bugs. Don't run out of refills! Turn it On, Mosquitos Gone.

For Use with the Thermacell Patio Shield s & Thermacell Portable Repellers
Each cartridge lasts up to 12 hours, and each mat lasts up to 4 hours.
Refills can be stored for long periods of time.
Cartridges & mats don't need to be used all at one time.
For example, one could use the cartridge and mat for an hour a day. Simply turn the unit off and restart when ready.
If time between use will be more than a 1 week, store the mat in a dry, dark place.
Repellent is a synthetic copy of a substance found in chrysanthemum flowers [Allethrin, a copy of a naturally occurring insecticide]

For 48-Hour: Package contains: 48 hours of refills - 12 repellent mats and 4 butane cartridges.

Thermacell Mosquito Repellent Refill - 48 Hour