of chitin, a carbohydrate needed to form the insect's exoskeleton. With these inhibitors, an insect grows normally until it molts. The inhibitors prevent the new exoskeleton from forming properly, causing the insect to die. Death may be quick, or take up to several days depending on the insect. Chitin synthesis inhibitors can also kill eggs by disrupting normal embryonic development. Chitin synthesis inhibitors affect insects for longer periods of time than hormonal IGRs. These are also quicker acting but can affect predaceous insects, arthropods and even fish. Compounds include benzoylurea pesticides. Examples Chitin synthesis inhibitors Diflubenzuron (Vigilante), a benzoylurea Triflumuron (Starycide), another benzoylurea Juvenoids Juvenoids are juvenile hormone mimics, also known as juvenile hormone analogs: Fenoxycarb (Varikill, Insegar, Logic) Hydroprene (Gentrol) Methoprene (Precor) Pyriproxyfen (Nyguard, Nylar, Sumilarv) Others Azadirachtin (AzaGuard) – 20E and JH antagonist, among other, non-growth-related actions References Insecticides