Continue to repel mosquitoes with replacement repellent mats. Mats should be replaced after 4 hours of use. Butane cartridges last up to 12 hours each.Single refill includes 3 mats and 1 cartridge, for a total of 12 hours of repellency.The value pack includes 12 mats and 4 cartridges and provides 48 hours of repellency.Max Life includes 4 mats and 4 cartridges for 12 hours protection per cartridge/mat.Mat Refills are just the mat only, no butane.Mega Refill Pack includes 30 replacement mats and 10 cartridges.
