Proper identification of the type of ant infestation is necessary for effective treatment. In the past, field ants have been commonly confused with carpenter ants, and if there is any question, an expert should be consulted on the matter.
For reasonably-sized nests, sealing cracks and crevices in the home's foundation and walls is typically enough to keep out potential wandering field ants. Be sure to check along the window sills and all electrical and utility lines. The use of mulch near the home's foundation is also discouraged as it is an attractive substance for their nests.
If a field ant nest has grown too large, it may need to be controlled through the use of insecticides. Complete saturation of the colony will be needed to ensure the elimination of the infestation.