The 2.5 Lb High Nitrogen 9-4-1 Bat Guano from Mankind Products is an organic fertilizer with a fast-release formula, perfect for indoor and outdoor use with a variety of plant types. With a volume of 0.6 gallons, this ready-to-use product provides up to 4 weeks of longevity and comes in a convenient bag packaging. Made from natural ingredients like phosphate and nitrogen, this guano is ideal for all seasons and offers a no presoaking feature for easy application.