Big Headed Ant
Big Headed Ants have two classes of workers. The first class act as defenders of the colony and have very large heads in proportion to their bodies. The second class workers have smaller heads that narrow between the eyes.
Big Headed Ants are known to nest under logs or rocks. It is also common for Big Headed Ants to nest under the slab of a building. They often enter structures through cracks or seams in the foundation. Even though they do not usually nest inside of homes, they will often enter in search of food and water. Indoor problems with these ants often start outdoors.
Prevention techniques include eliminating piles of lumber, brick, or other debris that could be possible nesting sites. Landscape mulch should be less than 2 inches thick and at least 10-12 inches from the foundation. Control often requires baits that ants take back to colony to share.
Big Headed Ants have been known to construct mud tubes similar to those of the Subterranean Termite.