Emamectin benzoate is anavermectinclass insecticide developed for the control of lepidopteron insects. This class of pesticide consists of homologous semi-synthetic macrolides that are derived from the natural fermentation products of Streptomyces bacteria. It kills insects by disrupting neurotransmitters, causing irreversible paralysis. It is more effective when ingested, but it also somewhat effective on contact.Emamectin Benzoate penetrates the leaf tissue and forms reservoir within treated leaves, which provides residual activity against pests that ingest the substance when feeding.It is approved by the EPA for use in prevention of emerald ash borer in ash trees.