actually carpenter ants do not damage wood they clean out old termite
damage
and rot damage


This is not the info at the link you posted
http://www.uky.edu/Agriculture/Entom...ruct/ef603.htm

"Besides being objectionable by their presence, carpenter ants damage wood by
hollowing it out for nesting. They excavate galleries in wood which have a
smooth, sandpapered appearance. Wood which has been damaged by carpenter ants
contains no mud-like material, as is the case with termites. Shredded fragments
of wood, similar in appearance to coarse sawdust, are ejected from the
galleries through preexisting cracks or slits made by the ants. "