Even with their large colony size, they are quite mobile and can move from one area to another quickly. A broadcast spray may temporarily alleviate an Argentine ant infestation. But there is a good possibility that the ants will simply move to another area until the chemical breaks down. After the chemical breaks down, the ants will return because they are constantly scouting and foraging for food, water, and nesting sites. Heavy mulch against the walls of houses creates pockets of moisture that these ants need.
Potted plants are a favorite nesting site.
Moving infested pots into the house can create an indoor infestation. These characteristics combine to create a pest control nightmare. Argentine ant control in the Southeast is an ongoing effort. Due to the large size of the colonies and their rapid mobility, even if one colony is eliminated, another will move into the area over time. An IPM approach incorporates all available control methods into a pest management program.