Pic Mosquito Repelling Coils with Mosquito Coil Burner - Pic Mosquito Repelling Coils helps to repel mosquitoes in confined areas outdoors. It is useful in places where there is little or no breeze such as patios and porches. Do not use indoors. For Outdoor Use OnlyEach Coil Burns 5-7 HoursOutdoors Place One Coil Every 10 FeetUse on Patios and PorchesRepels Mosquitoes That May Transmit Zika VirusIncludes: One Burner and 4 Mosquito Coils