| Ground Beetles Information |
Ground beetles are insects which normally live outdoors but accidentally enter homes seeking places to hide. They do not damage household items, nor are they dangerous to humans or pets. A few species will emit an offensive odor when handled however.
There are many species of ground beetles. They range in size from 2mm to 30mm; most are shiny black, although some are brown, red-orange or metallic blue or green. The legs are long and designed for running. Although they are capable of flying they normally prefer to run. The hard, armor-like wing covers (elytra) meet in a straight line down the back.
Adults generally hide beneath boards, stones and logs. Both the larvae and the adults of most species are predaceous, and therefore should be regarded as beneficial insects.
Control begins with a number of preventative measures. Remove those objects beneath which beetles may hide. Caulk or screen potential entry ways as needed. Since many ground beetles are attracted to lights it may be necessary to subdue the lighting around windows and doors (use the non-attractive yellow light bulbs).
A dustpan, broom and vacuum cleaner may be the most effective control tactic. After you turn on the vacuum spray a moderate amount of a household insect spray into the hose attachment. This will deposit enough insecticide in the vacuum bag to kill any live insects picked up during the cleaning process.
For a complete listing of suggested control options for all home, yard and garden insect pests contact your local Extension Service, found under local government in the phone book.
Read and follow instructions on the pesticide label. Heed all warnings. Check with your physician if you have any concerns regarding your personal health risk. Revised by Tom Ellis, M.S., Department of Entomology
MSU 2003
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