Inside, these ants usually nest underneath floors and in wall voids, especially near hot-water pipes and heaters. The workers visit food sources following regular trails, foraging up to 100 feet or more. The preferred foods are insects and sweets, but they will feed on almost any household food.
Outside, the nests are shallow and usually located in soil under objects or in such places as cavities in plants and trees, trash, refuse, mulch, and in potted plants. Here, they feed primarily on insects, seeds, fruits, and honeydew from aphids, mealybugs ans scale insects. They most often enter homes in the fall or after a rain because both conditions reduce their supply of honeydew.