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

Need to know

  • May spread human disease by contamintating food, utensils, and countertops.
  • Cockroaches can trigger asthma 

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.  

Links to this article are strongly encouraged, and this article may be republished without further permission if published as written and if credit is given to the author, Yard and Garden, and Iowa State University Extension and Outreach. If this article is to be used in any other manner, permission from the author is required. This article was originally published on September 12, 2016. The information contained within may not be the most current and accurate depending on when it is accessed.