Control measures for fall armyworm, (FAW), Spodoptera frugiperda (J. E. Smith), vary with the crop and its stage of development. Generally, seedling plants sustain economic damage with fewer larvae/unit area than do more mature plants. Resistance to insecticides for control of the FAW has been demonstrated for carbaryl and trichlorfon, but not for methomyl. New insecticides that have been shown effective are chloropyrifos, Larvin (dimethyl N,N'-[thiobis[(methylimino)carbonyloxy]]bis[ethanimidothioate]), and monocrotophos.