Encyclopedia Article

Wood roach nymph, length of 0.5 inch
Wood roach nymph, length of 0.5 inch

Cockroaches are the most disliked of all household insect pests. They are both annoying and a potential health threat. They may spread human disease by contaminating food, utensils, and countertops with disease organisms carried on their feet and bodies, or regurgitated with small quantities of partially digested food. Although associated with filth and unsanitary conditions, cockroaches can be found in the best-kept homes.

For the rest of this article, please see the handout titled Cockroaches and their Control from Iowa State University Extension.

Do you live in Iowa and have an insect you would like identified?

The Iowa State University Plant & Insect Diagnostic Clinic will identify your insect, provide information on what it eats, life cycle, and if it is a pest the best ways to manage them.  Please see our website for current forms, fees, and instructions on preserving and mailing insects.   

Contact information for each states diagnostic laboratory for U.S. residents.  If you live outside of Iowa please do not submit a sample without contacting the Plant & Insect Diagnostic Clinic.