Pharaoh ant nest in dark voids inside or around structures. Usual nest locations are wall voids, behind molding, in insulation in refrigerators, in cardboard, between sheets of paper and in soil of potted plants. Electric outlets and switch plates are excellent areas for pharoah ant nests. Their colonies have many queens. The workers are small yellow ants that follow trials from their nest to food. The best control is obtained with Pharoah and baits.