Happy Frog FX14630 High Phosphorus Bat Guano Fertilizer, 0-5-0The high phosphorus bat guano is perfect for gardeners who want the extra strength of this single, powerful ingredient. Because of the long aging process that this product goes through, our bat guano is packed with phosphorus to deliver spectacular flowers, sweeter fruit, and multiple bud development. Bat guano has been known since ancient times to be a highly beneficial soil amendment that has a powerful effect on all kinds of plants. Happy Frog High