Turn it on, Mosquitoes GONE! This 12 hour refill pack is specifically designed to use with Thermacell Mosquito Repeller systems, including the MR300 Repeller and Bristol Lantern. __ Creating a 15 ft x 15 ft zone of protection against mosquitoes without messy lotions or sprays, each refill will provide 4 hours of protection.__Includes: 3 repellent mats and 1 butane cartridge for a total of 12 hours of repellency _
