Thermacell® Mosquito Repellent Refills come in a variety of quantities.
Single Pack One refill includes 3 mats and 1 cartridge, for a total of 12 hours of repellency. The Value Pack provides 48 hours of repellency (12 mats and 4 cartridges). Mega Pack provides 120 hours of repellency (30 mats and 10 cartridges).
To continue to repel mosquitoes repellent mats should be replaced after 4 hours of use. Butane cartridges last up to 12 hours each.
Refills fit all Thermacell mosquito repellent models.