Fire ants can’t be eliminated entirely because it’s not possible to treat all areas that are infested. Thus the goal of current integrated pest management programs is to suppress fire ants as much as possible with biological control methods and use insecticides only where it is economically and environmentally justifiable to do so.
There may not be one “best” method for fire ant control, especially in large areas. The objective should be to find the method or methods that are cost effective and environmentally sound. In areas where these ants do not present problems, doing nothing is certainly one option.
For specific questions about fire ant control, please visit http://fireant.tamu.edu.