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German Cockroach

House Fly

Color: light brown to tan with two dark, almost parallel stripes located on their back, just behind their head
Legs: 6
Shape: oval
Size: 1/2" to 5/8"
Antennae: Yes
Region: Found throughout U.S.


The German cockroach is by far the most important and usually the most common of the cockroaches. In addition to being a nuisance, the German cockroach has been implicated in outbreaks of illness and allergic reactions in many people. This species has worldwide distribution.




German cockroaches can be found throughout structures but show a preference for warm and humid places. They are usually found in kitchens and secondarily in bathrooms, but infestations often occur in rooms where people eat and drink.




German cockroaches prefer to live in cracks and crevices near food sources and spend 75% of their time in such harborages. German cockroaches prefer to live close to sources of food and water, hence their affinity for residential and commercial kitchen environments.




Cockroaches have been reported to spread at least 33 kinds of bacteria, six kinds of parasitic worms, and at least seven other kinds of human pathogens. They can pick up germs on the spines of their legs and bodies as they crawl through decaying matter or sewage and then carry these into food or onto food surfaces. Medical studies have shown that cockroach allergens cause lots of allergic reactions. They were even shown to cause asthma in children. These allergens build up in deposits of droppings, secreations, cast skins, and dead bodies of roaches.




Good sanitation and habitat reduction, along with vacuuming, surveillance, a baiting program, and some sealing of cracks can usually quickly reduce or eliminate a cockroach population.



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