German Cockroach


Actual Size: 1/2″ – 5/8″

Characteristics: Pale brown with two dark longitudinal stripes behind head.

Legs: 6

Antennae: Yes

Habitat: Prefer humid, warm areas. Often found in residential and commercial kitchens as well as bathrooms. Usually in areas where people eat and drink.


  • Both males and females have wings but they do not fly
  • They are dependent on human activity indoors to survive
  • Rapidly reproduce and can produce over 30,000 offspring per year

German Cockroaches in Wisconsin

German cockroaches are the most common species of cockroach in the world. Their prevalence largely stems from their ability to produce more eggs and develop more rapidly than other cockroach species. In addition to its small size, it is characterized by a pair of dark stripes that run parallel to each other down its back. They boastfully develop wings, which they use to glide through the air for short distances on rare occasions. Females possess a broader abdominal section than males and thus appear larger. German cockroaches scavenge for food and demonstrate a particular fondness for starchy or sugary items, grease, and meats. In addition to foods found in the kitchen, their diet often includes household items such as glue, soap, toothpaste, or garbage.

German Cockroach Habitat or Environment

German cockroaches prefer wet, humid conditions and are typically found in or around kitchen cabinets, dishwashers, refrigerators, stoves, and sinks in homes and commercial properties. They frequently gain entry into residential and commercial structures by hitching rides in cardboard boxes, grocery bags, drink containers, and secondhand furniture or appliances.

German Cockroach Behaviors & Threats

German cockroaches are not known to bite humans, however, foraging cockroaches are vectors of disease, depositing germs or bacteria in areas they inhabit. German cockroaches can also cause allergic reactions, due to the insects leaving fecal matter and cast skins around the home, causing skin rashes, watery eyes, sneezing, nasal congestion, and asthma. In addition to spreading disease, German cockroach infestations may cause human psychological stress. With the social stigma attached to having cockroaches in your home, homeowners tend to alter their behavior by entertaining less often and avoiding kitchen and bathroom areas at night for fear of encountering the pest.

When it comes to German cockroaches, it’s important to always enlist the help of a professional cockroach exterminator for help.