hi we recently discoverd that we have termites worker termites coming up thru the foundation which is a raised 2 foot concrete foundation . i would like to find out if i need to replace all termite damaged studs etc.. even if some are just appear to surface gnawing trails. we want to do it right . we are replacing the definite bad damaged studs and treating the new stuff . i was wondering if i couldnt just treat some of the not so badly damaged wood ?