Thermacell Refill set

120-hour refill pack Mega-Pack, consisting of 10 gas cartridges and 30 active ingredient plates. Always ensure you have enough refills for your mosquito repellent device on hand. All Thermacell devices use the same refills. One gas cartridge lasts up to 12 hours, while one active ingredient plate lasts up to 4 hours. Refills can be stored for long periods. The gas cartridge and active ingredient plate do not need to be used at the same time. For example, you can use them for just one hour a day. Simply turn it off and use it again at another time. If there is a longer interval (over 2 days) in between, store the active ingredient plate in an airtight package in a dry and cool place. The synthetic active ingredient D-Trans-Allethrin belongs to the family of pyrethroids and is synthetically derived to mimic the natural biocide pyrethrin (derived from chrysanthemums). Note: Use biocides safely. Always read the label and product information before use.