HAVING PROBLEMS WITH GERMAN COCKROACH?

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APPEARANCE

German cockroaches are well-known indoor cockroaches with a distribution that is world-wide. Adults are easily recognized by their light brown or tan coloration with two black horizontal stripes located on the pronotum immediately behind the head, and growing to a length of 13-16 mm. The much smaller young, or nymphs, are darker, almost black in color, also with the black stripes behind the head.

While adult German cockroaches have wings, they rarely fly, preferring to run.

REPRODUCTION

German cockroaches are known for their ability to reproduce quickly. Female German cockroaches only need to mate once for the production of young. After mating, and under normal conditions, they will produce, on average, 4 to 6 egg cases during the course of their lives, with each egg case, or ootheca, containing approximately 30 to 40 eggs. This egg case is then carried by the female until 1 to 2 days before hatching. Depending upon the conditions, the average time for development, from egg to adult can range from 54 to 215 days, with an average of approximately 100 days. As adults, German cockroaches can survive anywhere from 100 to 200 days.

SIGNS OF GERMAN COCKROACH INFESTATION

DROPPINGS

German cockroach droppings may appear as small, dark, “pepper-like” material left on countertops or in drawers. Fecal staining may appear as dark spots or smears, some that are slightly raised, in the corners of rooms, along the tops of doors or around small cracks and openings into walls.

EGG CAPSULES

Since German cockroach females carries their egg case until 1 to 2 days before depositing it, empty egg cases may be found in areas that the females frequent.

ODOR

German cockroaches are also known to secrete a number of odorous compounds. When populations are present in large numbers, it may be possible to detect a mild, or what some have reported as a “musty” odor.