Influence of Hydroprene on German Cockroach (Dictyoptera: Blattellidae) Populations in Public Housing

Abstract

Four treatment regimes involving the insect growth regulator hydroprene were evaluated in 1983–84 against the German cockroach, Blattella germanica (L.), in low-income, multifamily, public housing apartments. Results showed that all treatments significantly reduced cockroach populations. An initial application of a 1.2% hydroprene total release fogger with a 1.0% propetamphos spray, followed by reapplication of the hydroprene at 3 months, was superior. Population reduction attained by this treatment extended control at least 6 months longer than two applications of a 1.0% propetamphos spray.