For control of labeled pests including bed bugs, flies, mosquitoes, wasps, gnats, moths, flying insects, cockroaches, ants, silverfish and various beetles. Active ingredient: Dichlorvos 18.6%. IRAC Group 1B Insecticide. Mode of Action: Dichlorvos, an organophosphate insecticide, works by inhibiting acetylcholinesterase and ultimately paralyzing insect nervous systems.