Susceptibility level of hospital–collected strains of German cockroach Blattella germanica (L.) to carbamate and organophosphorous insecticides using surface contact method in Tehran (2007-2008)

Abstract

Background: The German cockroach, Blattella germanica (L), is a world wide hygienic pest that is very difficult to control. Extensive usage of insecticides may develop resistance to a variety of insecticides, causing failure to control. This study was designed to determine resistance of hospital-collected strains of the German cockroach to carbamate and organophosphorous insecticides.