Hop over to Amazon and get a deal on 6-count of these FAB Rated OFF! Backyard Mosquito Repellent Coil Refills. This coil refill provides up to four hours of protection from mosquitoes. The coil works effectively even in areas as large as 10 ft x 10 ft (100 sq. ft), repelling bugs while leaving behind … Continue reading OFF! Backyard Mosquito Repellent 6-Count Coil Refills as low as $3.63 or 61¢/coil Shipped Free 6.1K+ 4.4/5⭐