Carpenter Ants are a big and nasty pest that can over a number of years cause damage to your home or business. Signs of Carpenter Ant intruders can be found. Looking for dead specimen (large black ant) around window sills, under sinks, around dishwashers and in some cases in cupboards and drawers. Carpenter Ants are attracted to damaged, or untreated woods and in many cases the best starting point for inspection is actually at the exterior of the home. If the nest can be located. Removal is the most effective solution.