The OFF! Mosquito Coil Refills in Country Fresh Scent come in a pack of 36 refill coils, providing 24 hours of mosquito prevention. These outdoor-use refills are designed to repel and deter mosquitoes, perfect for camping, hiking, and other outdoor activities. With EPA registration number 4822-602, these refill coils are a reliable and efficient way to keep mosquitoes at bay in your backyard or while on the go.