The German cockroach is the most economically important urban pest.
It is the most common cockroach species in houses, apartments,
restaurants, hotels, and other institutions throughout the Untied
||Light brown with two dark stripes along the pronotum
||½ inch long
Adults of both sexes have well-developed wings, but they never fly.
Adult females carry the egg capsule protruding from the rear of the
abdomen until the eggs are ready to hatch. Nymphs have habits
similar to those of adults. They are active mostly at night but
hide in dark crevices during the day. If German cockroaches are
seen during the day, the population is probably so large that the
available cracks are already full, or food and moisture are in such
short supply that daytime foraging is necessary. The German
cockroach is a general feeder but is particularly attracted to
fermented foods and beverage residues.
Infestations are sometimes found in areas not generally suspected
of harboring German cockroaches, such as dresser drawers in
bedrooms. German cockroaches found scattered through non-food areas
of a home or building is usually a sign of a very heavy infestation
or of the repellent effects of insecticide applications elsewhere
in the facility. Adult males appear to be the most mobile stage,
followed by nongravid adult females and large nymphs; gravid
females probably rarely leave the harborage.
Besides the nuisance factor, German cockroaches can spread disease
and can spread cockroach specific allergens that have been known to
Keeping the home clean and food debris free and harborage
reduction/removal are the first steps to successful German
cockroach control. A vacuum cleaner with a HEPA (High Energy
Particulate Air) filtration system can be used to remove large
amounts of cockroaches in a short period of time. Do not attempt to
vacuum this pest without a HEPA filter on the vacuum.