Pavement ants are also known to create nests in wall insulation, and under floor boards. They will scavenge for food and can be found working together trailing food back to their nest. They are not picky eaters and will feed on insects, crumbs, and other easily accessible food sources. Pavement ants will communicate with each other and bring other worker ants to aid in  bringing food back to the colony. 

Sometimes ant issues go unnoticed if they are hiding under the floor or in between walls. When pest control treatment occurs it can encourage them to retreat from their nest causing what may seem like an ant infestation. However, they will not remain active for long as they continue to react to the treatment.