Hello list, I'm looking for info regarding a customer who has been diagnosed with a serious allergy to poisonous mold spores that have apparently infected his house. He asked me whether there was any way to treat permeable surfaces such as felt, unfinished wood, etc. in pianos for the spores which can lodge there that didn't involve replacing everything. I have no experience with this issue at all. Anybody know? Thanks so much in advance for any advice and knowledge! Greg Granoff Humboldt State University