Lady Beetles were introduced to the U.S. in 1988, when a population was found in Louisiana, apparently the result of an accidental introduction from a freighter in New Orleans. Asian lady beetles cluster around buildings in large numbers during fall as they search for protected sites to overwinter. From building exteriors they crawl under siding and roofing and into cracks and gaps in foundations and around windows, doors and other openings. They may continue to move into the living areas of homes or they may spend the winter inside the attic or wall voids. Mild, sunny winter days can wake these dormant insects.