Brood are the larval and pupal stages of the ant. Brood are cream colored to white and immobile, so workers ants must carry them when they need to be moved. These ants probably arrived in Louisiana in the 1890s on coffee ships from Brazil. They rapidly spread throughout the United States. Entomologists have been trying to control these ants since the early 1900s.
Argentine ants avoid the cold winters by inhabiting heated buildings.
Argentine Ants Argentine ants are difficult to control for the following reasons. Foraging adult ants are only a fraction of the total colony. Broadcast spraying around the perimeter of the house targets only the foraging adult ants in the colony. Control will be temporary since the colony will simply send out more foraging ants when others are killed. The colony supports multiple queens if ant populations are large.