High in the nutrients needed for every stage of plant growth, Sunleaves Peruvian Seabird Guano is an excellent all-purpose fertilizer. All-natural with no chemical additives, Peruvian Seabird Guano is listed by the Organic Materials Review Institute (OMRI) and safe for use indoors and out. Nothing like it for accelerating growth, Peruvian Seabird Guano is pelletized for water solubility with less mess. Use it on houseplants, vegetables, ornamentals and fruit trees.