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Roaches

American Cockroach

Here in the Midwest we commonly see five types of cockroaches: the German cockroach, Brown-banded cockroach, American cockroach, Oriental cockroach, and the Woods roach.  Each type of cockroach is distinctly different in appearance and habits, and therefore requires different control procedures.

Woods Roaches:  Most commonly mistaken for a German cockroach, the woods roach is an outdoor insect that occasionally finds it's way indoors during foraging or when firewood is brought into the home.  As their name implies, this species is commonly found in wooded areas, woodpiles, under the bark of old logs and sometimes under wooden shingles.  the male of this sprecies has functional wings and is a strong flier, especially when disturbed.  They feed primarily on decaying organic material.  Click on this link htt://pested.unl.edu/woodroa.jpg to see a picture.

Oriental cockroaches:  These roaches are sometimes referred to as "waterbugs" or "water beetles".  They are usually much larger than German roaches and very dark to black in color.  They prefer dark, damp places like drains, woodpiles, basements, crawlspaces, garbage cans, etc.  Each female can produce nearly 200 offspring per year, but development from nymph to adult can take from 1-2 years or more.  click on this link http://pested.unl.edu/orienroa.jpg to see a picture.

German cockroaches:  By far the most common roach found in homes, restaurants, supermarkets, hospitals, or anywhere food is stored, prepared or served.  German cockroaches are hitchhikers and may come into the home in grocery sacks, beverage cases, potato sacks, furniture, appliances, etc.   They prefer warm, moist areas near food and water sources (kitchens, bathrooms, etc.).  The German roach reproduces more quickly than any of the other species ( a single female can produce over 600 offspring in a year).  Once hatched, the nymphs can reach sexual maturity in as little as 45 - 60 days.  Because of their prolific reproduction, a single cockroach can result in a serious infestation in very little time.  Click on this link http://pested.unl.edu/gerroa.jpg to see a picture.

Brownbanded cockroaches:  The brownbanded cockroach is not as common as either the Oriental or German cockroach, accounting for a very small percentage of the indoor infestations.  They prefer areas that are very warm and moist most of the time, and can be found near appliances such as refrigerators, telveisions, etc.  This particular species prefers starchy food (e.g., glue from stamps, bookbindings, or wallpaper), are often found where paper is stored, and in homes or apartments that are not air-conditioned.  Click on this link http://pested.unl.edu/bbroa.jpg to see a picture.

American cockroaches:  Like the brownbanded roach, the American cockroach prefers warm and humid environments with temperatures in excess of 82 degrees/  They are common in zoos or other animal facilities, sewers, steam tunnels, and storm drains, but occasionally forage into the ground floor of buildings.  The egg capsule is brown when laid, turning black within 1-2 days, and contains about 12 young.  Click on this link http://pested.unl.edu/amerroa.jpg to see a picture.

Which one is in my home?  Click on this link
http://entomology.unl.edu/CHARTS/ROACHES.GIF to see comparison pictures of the different species of cockroaches.

Control and Treatment

Because each species is different and require different treatment methods, the first steps to managing a cockroach infestation are proper species identification and location of their harborages.  Sticky traps are probably the best tool to use in order to find out where they are most active and to capture insects for identification.  The most important step, once this is done. is sanitation (removing food sources) and exclusion.  While it is possible to eliminate roaches by do-it-yourself methods, for most situations (especially German cockroach infestations) it is advisable to call a pest management professional.

Commercial traps are limited in their effectiveness, and devices that emit sound to repel cockroaches are not effective!

Most German cockroach infestations can be eliminated using no-odor, low toxicity gel baits that not only kill the roaches, but also render them unable to reproduce.  This type of treatment can be done in your home with very little disturbance to the homeowner.

If you have a roach problem, call Monroe Pest Control Company, Inc. for a free inspection and estimate!

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Last modified: September 26, 2006