Medina's Compost Starter is a natural biological activator for use with compost piles and solid organic wastes. Medina's Compost Starter contains specific bacterial and fungal cultures that are needed to inoculate a new compost pile. It ensures a faster startup time and a more complete digestion of organic waste. 100% natural Environmentally safe Faster startup time of compost piles APPLICATION RATES Mix 1 oz. Compost Starter with water (amount of water is not critical) and spray evenly over each 250 lbs. of material to be composted. Mix or agitate material after application.