Pharaoh ants are one of the smallest species of ants (1/16-in in length) that has earned a place as one of the top ant invaders worldwide. Originally from Africa, this invasive species of ants is yellow and brown in color. Pharaoh ants are a major indoor pest. They will typically only forage for food within a structure, particularly foods that are sweet, oily, and high in protein. Like most ants, they are beholden by a queen. Pharaoh ants actually have multiple queens within their colony which explains why their colonies get so large in size.
Nest are typically located close to food source in warm and humid areas – making wall voids a perfect nesting site. Pharaoh ants have been known to be a big issue in commercial food handling establishments as well as hospitals. Their nests often fragment during mating, forming smaller colonies which is a big reason why these ants are so difficult to control.