Cockroaches are one of the most common insects that spend their lives in human homes or businesses. They are very resilient to changes in temperature, humidity, and water. German cockroaches are native to Europe but have spread all over the world. They can live in a vast range of environments, and they adapt to home life exceptionally well.
They come into the house primarily through food and water, dishes, garbage, or other ways that provide them access to the inside of a home. They feed on leftover food and waste, so they quickly increase their numbers when enough food is available.
This species of cockroach also has an extremely high reproduction rate, which increases their populations rapidly.
Although cockroaches can carry many different diseases such as dysentery, hepatitis A, Salmonella, and diarrhea-causing E-coli bacteria, they do not transmit these to humans.
German cockroaches come from a variety of sources, including shelters and commercial establishments. As a result, German cockroaches are the most prevalent cockroach species in America. They can rapidly invade homes because they will travel from building to building.
They are mainly found in buildings, but they can also be found inside appliances. German cockroaches are the most difficult to control, both inside and outside building structures, compared to other cockroaches. They are most often introduced into structures via infested food commodities, but they can also be introduced in furniture, small appliances (e.g., toasters, microwaves), grocery bags and boxes, storage bins or totes containing food or supplies, potted plants, and landscaping timbers. They also can be introduced in automobiles, recreational vehicles (RVs), boats, and trains. In addition, German cockroaches may enter structures from outdoors by tracking along water pipes, foundation cracks/expansion joints, or other routes.