Pharaoh ants, being tiny, can be found in diverse places. Inside, they like to nest in warm areas. Their nests are usually well hidden, and they can forage far away from the nest with trails marked by trail pheromones. Pharoah ants can be persistent, with large colonies.

Ants usually come indoors in search of food or nesting habitat. Even small amounts of food, like pet food crumbs, can attract hordes of industrious ants. Ants are one of Earth’s most successful animals, and comprise more than 13,000 species.