Yes. When their nests are disturbed, carpenter ants bite in defense. Due to their large size, the bite can be painful and potentially break the skin. Carpenter ants also spray a defensive chemical of formic acid, which they can spray into the bite wound, further increasing the pain.

What happens if a big black ant bites you?

While carpenter ant bites should be harmless, there is a chance that what bit you was something more dangerous than a carpenter ant. If you experience swelling, long-lasting pain, a fever, or the bite site getting worse, call a doctor. This may be the sign of an infection or allergic reaction.

Why do I have big black ants in my house?

Carpenter ants build their nests outdoors in various wood sources, including tree stumps, rotting fence posts, old firewood, under stones, etc. ... The first appearance of winged males in a home often causes homeowners great concern, as it signifies that ants are living inside the house.