Don't be fooled by the size of this inoculant package. Highly concentrated beneficial microorganisms of Streptomyces violaceusniger strain will treat 20 cubic feet of compost or 201 gallons in bins or tumblers. Not only does it accelerate the composting process time, but will also promote a richer, more fertile growing media. Safe, non-toxic, with no added. Simply add this to your compost heap so it can feed on decaying and dead matter and soon it will convert them to nutrient rich compost beneficial for all your plants. 20 gram packet.