BoraCare
I'm not a licensed exterminator, nor do I play one on TV but if you have "dry wood" (assuming you don't have "subterranean") termites, your best bet may be BoraCare. (see link below) It's not cheap but once treated, the wood will be protected for basically the life of the boat.Chlorine may also kill the termites but my experience as an electrical engineer in high chlorine industrial enviroments (water treatment and pulp bleaching) tells me you'll have to replace all electrics and wiring shortly after the treatment.Either way, I would get professional advice. Not only is your investment at risk from termites, the future health of yourself and family members could be at risk from improper pesticide application.Happy sails *_/),MArk