It is important to keep your trees and shrubbery trimmed back from your home to keep white footed ants from getting inside. They can be found in attics often because they have “bridges” of tree branches leading to roofs. They only need the tiniest of openings to get inside. They are attracted to sweet foods, nectar and honeydew produced by bugs such as aphids. They also eat dead insects. They even have sterile ants that can lay unfertilized eggs to feed some of the ants in the colonies. They send out forager ants to bring back food to the nest. These ants travel in lines which you can clearly see along walls and tree branches. The foragers make it easier for the other ants to find food sources because they leave a trail of pheromones for the other ants to follow.