Carpenter Ant

 Identification and Control

Proper identification is an important first step in controlling ants.

Camponotus spp.

How to Identify an 

Carpenter Ant

The carpenter ant is one of the larger ant species, typically ranging from 1/4th to 1/2 inch long. They are black or dark brown and have a segmented body with a large thorax. Their antennae are also segmented and they have two pairs of wings (although many times they will lose one or both wings).

Where do they come from?

Carpenter ants are found in most parts of the United States and are especially common in forested areas. They nest in wood, both living and dead, and can do serious damage to homes and other buildings if left unchecked. Carpenter ants are most active at night, and can often be seen foraging for food around homes and other buildings.

How to keep them out

The best way to prevent carpenter ants is to seal all cracks and openings in your foundation and exterior walls. Make sure there is no wood debris or other potential food sources near your home. If you see an ant trail, use a commercial ant killer or bait to eliminate the colony. Finally, keep your home and property well-maintained to discourage them from nesting there in the first place.

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What do they look like?

Dorsal view of a carpenter ant
Close up head of a carpenter ant
Evenly rounded thorax of a carpenter ant
Side view of a carpenter ant

Where do they live?

Wood (often start with wood with water damage)


Camponotus spp.


Large but workers vary in size


Honeydew, sweets, and insects

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