Fire ants move into dark, dry places when it floods and into moist areas in drought conditions. Laundry and laundry rooms are often warm and humid, providing suitable habitat. A pile of laundry also resembles their tunnels.
Clothing soiled with food particles or oils can also attract foraging ants.
Any room in your home with these conditions can attract fire ants.
Find more information about fire ants in eXtension's Imported Fire Ant Resource Area.