Thermacell 12 Hour Unscented All-Purpose Outdoor Refill. This refill kit includes 3 repellent pads, each effective for 4 hours, and 1 butane cartridge, effective for up to 12 hours, providing a total of 12 hours of mosquito protection. Compatible with ALL Thermacell repellers, lanterns, and torches, including Repellers TV#'s 201085, 672404, 672434, and Mosquito Repellent Lantern TV# 201374.