Librarian Files

Cockroaches--Vector Control

To report cockroach infestations in Tucson and Pima County, call Vector Control at (520) 443-6501.
 
To help keep American (Sewer) Roaches out of your house:
When sinks and tubs are not in use keep drains closed.  Run water down your drains daily, roaches cannot swim through water, so water in your traps will keep roaches from entering your home.  Pour about 1/4 cup of bleach down your drains once a week, roaches hate bleach. ***
 
There are two types of cockroaches that are most common in the Tucson area.

German Roach

This type of cockroach is more invasive. This roach prefers kitchens and bathrooms where there is a supply of food and water.  This type of cockroach cannot survive in the sewer. These roaches are pale brown and about 1/2 to 3/4 inches long. These cockroaches cannot enter a home through the sewer. 
 

American Roach

These cockroaches do live in the sewer. These cockroaches are also known as sewer roaches.  These cockroaches are reddish brown and about 2 inches long. American Roaches prefer moist areas and can enter homes through open drains.  Photograph of the American Roach
*** According to an expert, bleach is unnecessary. Keeping water in your traps should be enough to stop the cockroaches.  There was only one study done on cockroaches under duress that found they can manipulate their way through a water-filled trap.  Use your sinks, tubs and shower regularly or plug your drains to keep cockroaches out.  Editorial in Arizona Daily Star "Don't let those silly myths bug you." This was written by Carl Olsen, an associate curator at UA's Department of Entomology and was published in the Arizona Daily Star, August 17, 2006, PageA1.
 
You can find further information at the Pima County webpage: www.pima.gov/wwm/about/div/conveyance/vector.htm
 
Sources:
 
"Roaches’ spraying cuts stir concerns." Arizona Daily Star. July 13, 2004.  Page 1.
Wastewater News. July 2006. (Newsletter insert with Tucson Water Bill--July 2006)
 
"RWRD: Divisions and Department Information." Pima County Government Arizona | Tucson, Marana, Ajo, Oro Valley, Sahuarita, Three Points, Arivaca. http://www.pima.gov/wwm/about/div/conveyance/vector.htm (accessed October 14, 2011).

Article tagged with: cockroach, cockroaches, roach, roaches, vector control

Last Update: 4-19-2014 3:07pm

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