In addition to seeds, dead insects are also collected for food. Nests occur in open areas. Often there is no vegetation within a 3 to 6 feet circular around the central opening of their colony and along foraging trails radiating from the colony. Heavy infestations in agriculture may reduce yield but colonies are usually widely separated. They do not invade homes or structures.
Worker ants can bite and produce a painful sting but are generally reluctant to sting.
Harvester ant workers are commonly sold for ant farms. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.