What is the state of the art for cleaning white fuzzy stuff from inside vertical pianos?
I've got a customer with an older Steinway upright that had some mice in the past, was in a somewhat humid environment, and now it looks like each little puddle of mouse pee has grown a white tuft of mold or mildew. This is mostly down on the trapwork and bottom board.
I'd like to wipe it down with an abrasive pad and am wondering what liquid to use.
Some research in our archives and on the web produces conflicting advice. Options include mild detergent and warm water, dilute bleach solution, dilute vinegar, dilute muriatic acid, alcohol, X14, Medica DC 10, and a host of others.
I'm hesitant to get bleach anywhere near the interior of a piano, to prevent rusting strings. Same with acid (vinegar or muriatic).
What has worked for you?
Thanks,
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Greg Graham, RPT
Brodheadsville, PA
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