Ants can create their nests in a variety of places and are often seen wandering around decks, patios, driveways, and walkways while foraging for food. Some common outdoor nesting spots include under soil and mulch, in wood piles, underneath rocks or fallen trees, in tree stumps, along fence lines, and in the cracks of pavement or sidewalks. Once they find their way into your home, ants will often create satellite nests underneath floors, behind walls and large appliances, inside insulation, in crawl spaces, and near heating systems. They are commonly found gathering in basements, kitchens, and pantry areas.