There are some types of ants that actually establish a nest inside your home instead of merely entering to forage for food and returning outdoors. Ants in this category may be present year round, although they will be more active in the warmer months. Ant species that may live in seattle homes include crazy ants, odorous house ants, pavement ants, pharaoh ants, thief ants, and carpenter ants. All of these ants may infest food products. Spraying a residual insecticide to control foraging workers may provide only short-term control. Even when over 99 percent of foraging workers are killed by insecticide sprays, the colony may rebuild to its original numbers. Location and total destruction of the nest is the most direct way to eliminate this ant infestation.