Carpenter Ants: This aggressive species of ant is found nationwide, especially in the northern region. Carpenter ants attack wood and can cause severe property damage, which is usually not covered by homeowners' insurance.
Odorous House Ants: This species is found in every region of the U.S. and commonly nests in basements, crawl spaces and adjacent structures. Odorous house ants do not pose a health risk, but they give off a strong, rotten coconut-like smell when crushed.
Pavement Ants: These black ants are found throughout the eastern portion of the U.S., and in California and Washington. They get their name from making nests in or under cracks in pavement. Pavement ants can contaminate food and should be avoided.
Red Imported Fire Ants: These red ants are found in the southeastern U.S., from Virginia to Texas, as well as California and New Mexico. They are commonly introduced to new areas through potted plants, shrubbery and trees. Fire ants will sting humans who disturb a nest, often causing painful welts.