You will generally find Field ants, or Formica ants in lawns and open areas. When mounds are built close to the foundation of a home, the ants can get inside looking for food. The ants are often mistaken for carpenter ants, because they are larger in size, a ½-inch and up. They will bite if the mound is disturbed. The queen lives deep underground. Removing her will destroy the colony, but it can be difficult. Professional pest control can help you find a solution.