Sugar ants appear in different forms, varying from 5 to 15 millimeters in length. Sugar ant colonies have two types of workers: minor workers and major workers that have different size ranges. The two can be identified easily, due to the workers being smaller and slender, while the soldiers are larger and more robust. Nests are found in a variety of sites, examples being holes in wood, roots of plants, twigs of trees, shrubs, between rocks, in the soil, and under paving stones. Sometimes, sugar ant colonies form small mounds. The banded sugar ant is considered a household pest and is occasionally seen in houses at night. They are capable of damaging furniture and fittings by chewing the wood. These ants do not pose any threat to humans, as they are incapable of stinging and can only spray formic acid. However, the larger soldiers are capable of inflicting a painful bite with their powerful jaws, and the formic acid they spray is corrosive to human skin.