EverGreen Pyrethrum Concentrate is a botanical insecticide built around pyrethrins, compounds derived from chrysanthemum flowers. The liquid concentrate is diluted with water before use and applied as a coarse or low-pressure spray with handheld, backpack or power sprayer equipment. It is labeled for use on cattle, poultry and hogs as well as in and around the barns, dairies, poultry houses and food-handling, processing and storage areas where those animals are kept. The formula is described as low odor and non-corrosive to spray equipment, and it carries an OMRI listing for use in organic production. Each gallon jug ships as a single-container unit ready for on-site dilution. Because pyrethrins act quickly but do not leave lasting residue, label directions call for monitoring pest populations and reapplying as needed rather than relying on one treatment.