The Thermacell R 4 Mosquito Repellent Refills in a 4-pack are designed to effectively repel insects while camping or hiking. These disposable refills are treated with insect repellent and are easy to use, providing long-lasting protection from bites. Made by Thermacell, a trusted brand in outdoor survival gear, these white refills are a convenient and reliable solution for keeping mosquitoes at bay during your outdoor adventures.; 4 fuel cartridges, 12 mosquito repellent mats