Roots Organics Super Nitro Bat Guano is a premium product that will encourage vigorous plant growth. This fast acting formula is incredibly high in nitrogen and an excellent source of nitrogen, phosphorus and calcium. Ingredients have been extracted only from select caves when the quality is at its highest and consciously extracted to not disturb the bat colonies. Next, Roots Organics carefully processes and sifts the Bat Guano to make it easy to work with. This superior product is extremely powerful and should be used carefully and sparingly. Roots Organics Super Nitro Bat Guano contains 100% naturally occurring Bat Guano. No additives. No filler. Quantity: 9 lbs.