In contrast, termite tunnels are not clean looking, but are packed with dirt-like material. Occasionally swarms may come out earlier during late winter on warm, sunny days. The best control is to apply an insecticide directly into the nest. It is also important to replace damaged or decayed wood, and if possible to eliminate any moisture problems. For additional information, contact your local extension office for a separate fact sheet on carpenter ants.
Cornfield ants are very abundant outdoors.
They also nest in soil under stones, bricks, sidewalks and other concealed sites. They can nest in rotting logs and stumps. They rarely nest in homes. If nests are not obvious, treat the building perimeter with a residual spray. Commercial baits available to the public may be effective.