It was observed in the present study that the cockroach infestation in all the sites ranged from moderate to high and the infestation were primarily of B.
germanica which has also been found to be the most dominant species in other studies as well in the same area earlier. The prevalence of B. germanica is partly due to its relatively small size, high level of fecundity and shorter development time than other cockroach pest species. Besides its biological characteristics,
B. germanica is also notorious for its ability to develop physiological and behavioural resistance to insecticides.
The efficacy of propoxur aerosol in control of German cockroaches has been reported by other workers also in similar settings