<html> Hi Paul :) I was talking with some other technicians at the Reno convention about this very topic, in specific about the various companies offering ozone tenting treatments to get rid of smoke smell in pianos, sofas, furniture, etc. One tech (this was after LaRoy Edward's regulation class) mentioned that he had run such a business, but that it was only appropriate for grands worth over 9 or 10 k because that's how much work  *in addition* to the ozone treatment had to be done... like replacing felts, repinning, cleaning, new hammers& dampers, etc. Another tech in the conversation said he'd followed up smoke damaged pianos after several years, and was amazed at how corrosive smoke truly is, even if it's "cleaned" off the visible parts.  There are so many tiny bits of wire, silk cloth, felt, leather, and wood to clean, and smoke travels deep into all those thousands of crevices.  It's a gas, remember, he said, and the acids in the smoke had pitted wire and etched into metal parts. He also said that  insurance companies want to settle for low, easy fixes, and he'd been burned  once or twice when he'd given estimates of repair *way* too low and done the work... but those pianos had developed such severe problems a few years later.  Not a good scenario! So, there may be, and probably is, more damage than you see right on the surface.   Take care.. Marty Reyburn</html>