Off! Mosquito Coil Starter with 6 Refills. It is packaged in a metal modern, decor tin to protect from weather. Each starter comes with 3 coils & 3 trays. It repels mosquitoes and is for use on patio & decks. It has a country fresh scent and lasts up to 4 hours. It protects up to 10' x 10' and is for outdoor use only. For refill use #75203.