Residual Effectiveness of Insecticides for Control of German Cockroaches (Dictyoptera: Blattellidae) in Food-Handling Establishments

Abstract

Residual effectiveness of insecticides was compared for two treatment methods at various sites within two commercial kitchens. For all sites and insecticides, German cockroach, Blattella germanica (L.), mortality was greatest for treatments of cracks and crevices than for treatments of exposed surfaces. Mortality at the dishwashing site was lower than at all other sites. We attributed reduced mortality at the dishwashing site to a higher vapor pressure deficit. Mortality and the amount of insecticide residue recovered from treated surfaces were closely correlated. These data demonstrate that careful placement of residual insecticide treatments will influence their effective longevity.

Eficiência E Efeito Residual De Inseticidas Aplicados Em Diferentes Superfícies Para O Controle De Blattella Germanica (Linnaeus, 1767) (Dictyoptera: Blattellidae)

“…Diversos métodos de controle têm sido propostos e pesquisados dentro da filosofia do manejo integrado de pragas, destacando-se as iscas (ross, 1998(ross, ), armadilhas (aPPel, 1995smith ii et al, 1997) e os inseticidas (Braness, 1990;Braness et al, 1991;el-awami;Dent, 1995;KaaKeh et al, 1997).…”