Pyrethrum extract Organic insecticide. Ingredient of insecticidal sprays. Pyrethrum extract 25%, 50%, 70% Pyrethrins Latin Name: ... months in unopened container. USEOrganic insecticide. Ingredient of insecticidal sprays for use in households, food-storage warehouses, animal facilities ... and on domestic and farm animals; garden and indoor plant sprays; control of insects in fruit, vegetable, field crop, ...