The pavement ant makes its nest in the ground near or under sidewalks or driveways and often under the foundations of buildings. When visible, the outside of the nest looks like a small mound of sand between cracks in the pavement.
Pavement ants have a varied diet. They can feed on the honeydew produced by certain insects, sweet substances, grease, seeds, or other insects. The workers can enter buildings through cracks in concrete slabs to forage for food. Nests may be found near a heat source (radiator, heating pipe, etc.) inside buildings. At that point, they can stay in your home all year long.