Q: How do I control carpenter ants? I see them wandering around in my kitchen.

A: Carpenter ants can have nests inside or outside the home. Usually the dwellings are in moisture-damaged wood around chimneys and skylights, under bathtubs, behind dishwashers, and in moisture-damaged eaves. In general, rotten wood will attract and be used by carpenter ants as nest sites because damp wood is easier for the ants to chew than sound, dry wood. Commercial ant bait stations work well for their control.
http://www.caes.uga.edu/publications/pubdetail.cfm?pk_id=7125