Nuisance (house) ants
Certain ants, for example fire
ants and harvester ants, attract our attention
because they can sting people and animals.
Some, like carpenter
ants, are important because they damage
building materials. And some ants only become
pests when they enter homes in search of
food and water.
The last group of ants usually causes
no structural damage, and pose little health risk,
but are important because of their numbers alone.
These are the house-invading ants, nuisance
ants or simply house ants. Common
house ant species are: odorous house ant, Argentine
ant, pharaoh ant and a few other species.
Most ants that invade homes are
yellow, red, brown or black in color, constricted at
the waist, and 1/8-1/4" long. If you find ants that
are larger than about 3/8" (in the US) you've
probably found carpenter
ants. You may also occasionally see ants with
wings (all species), these are the so called