OFF! mosquito repellent coil in a water-resistant, crush-resistant, reusable tin case. Helps to repel mosquitoes in semi-confined areas such as porches, patios and other areas where there is minimal breeze. Each coil lasts up to 4 hours and protects an area 10′ x 10′. For outdoor use only. Country Fresh scent. Contains 3 coils and 3 trays.