Roots Organics Super Nitro Bat Guano is extracted from select caves when the quality is at its highest point. Potent and powerful high-nitrogen guano provides an unparalleled, completely natural source of nitrogen. Roots Organics Super Nitro Bat Guano is fast-acting and is so powerful it should be used carefully and sparingly. Our conscious extraction methods ensure that bat colonies are not disturbed during the harvest. All of the Roots Organics guanos have been carefully sourced for quality and harvested with bat-friendly methods so you and your garden get performance with principles.