Ground Beetles
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.