Pure bat guano has been used for centuries as a plant food of the highest quality. An excellent source of nitrogen and trace elements all vegetative crops need, Sunleaves Mexican Bat Guano (10-2-1) substantially boosts leaf growth and overall plant vigor. Mexican Bat Guano is also approved by the Organic Materials Review Institute (OMRI). We suggest using it with our high-phosphorus Jamaican or Indonesian Bat Guano for impressive flowers and delicious produce.