The Pharaoh ant is one of the most difficult ant species to control. They can be found in all types of buildings, but have become a particular problem in hospitals because of the multiple types of bacteria that they carry. They enter into structures and buildings through small cracks and other openings. Pharaoh ants are extremely small, though not quite as small as Ghost ants, and very slow-moving as well. The workers are approximately 1/16 of an inch in length and range from light brown to reddish in color.
Pharaoh ant queens are capable of producing up to 12 eggs per day that will hatch every 7 days. Their typically life span is about 9 – 10 months. They are normally found in kitchens and bathrooms, but prefer to make their nests in warmer locations such as wall voids, heating systems, and around hot water pipes.