Pyrethrin is a natural insecticide, derived from the Chrysanthemum flower (Pyrethrum) that have potent insecticidal activity. The active ingredients are extracted with organic solvents to give a concentrate containing pyrethrin I and II, cinerin I and II, and jasmolin I and II. Supercritical carbon dioxide has also been used as an extractant. Pyrethrins are neurotoxins that attack the nervous systems of all insects. When present in amounts not fatal to insects, they still appear to have an insect repellent effect. Pyrethrins are gradually replacing organophosphates and organochlorides as the pesticide of first choice. They are non-persistent, being biodegradable, and break down on exposure to light or oxygen. The chemical structure of pyrethrins inspired the production of a variety of synthetic insecticides called pyrethroids such as bifenthrin, permethrin, and cypermethrin.

Organic insecticide: Ingredient of insecticidal sprays for use in households, food-storage warehouses, animal facilities and factories and in farm; garden and indoor plant sprays; control of insects in fruit, vegetable, field crop, and vine cultivation. It prevent aphid, snout moth's larva, stinking, caterpillar, coccid, cabbage caterpillar, bollworm, dark tail leafhopper. And kill the mosquito, fly, termite, black beetle, spider, bedbug.