In the meantime I learned that there are several types of Fantastik product. The one that is approved by epa for SARS-CoV-2, the virus that causes COVID-19, has "disinfectant" in the tag line under "Fantastik":
https://www.whatsinsidescjohnson.com/us/en/brands/fantastik/fantastik--Disinfectant-Multi-Purpose-Cleaner--Fresh
The epa list is here:
https://www.epa.gov/pesticide-registration/list-n-disinfectants-use-against-sars-cov-2
If you look up Fantastik, you will see that it is listed as requiring 5 minutes to kill the virus. I guess that is without manipulation, and when we rub the keys its effectiveness should be sped up greatly.
To increase its disinfecting properties, I have mixed Fantastik with more alcohol and no water (60% fantastik + 40% concentrated isopropyl [91% or stronger]) and have had good results on the keys and on lacquer and poly finished. No apparent combustible reactions or deadly fumes. The mix flashes off rapidly, degreases better than anything else I've tried, and leaves no visible residue. But do I need to soak the keys for 5 minutes? I don't know, but the mix evaporates way faster than that.
I have to say that my techs and I get a mild headache from Fantastik by itself or mixed with alcohol. It's clearly not something we'd prefer to work with continuously. When we get back to work, the first thing I'll try is the pharmacy (3%) hydrogen peroxide, but I remember from years ago that spraying it caused visible changes on the fallboard finish. That may have been because of the dirt or inferior finishing product on the fallboard. At Juilliard we have pianos that were refinished (or finish reflowed?) with a product that gets damaged by alcohol whereas factory lacquer doesn't. It may be the same with hydrogen peroxide.
The other strategy I would've pursued before the school shut down was giving students alcohol pads such as Purell hand wipes so each user can disinfect the keyboard before use. What good is daily disinfection if 10 or 20 people will use the piano during the day? Unfortunately, we couldn't procure enough of those to have made them a feasible strategy. Now I hear from more people that Clorox wipes are OK, and will look into those. But I remember having a skin reaction and headache with those and Lysol wipes.
Someone asked, what about ivory. For an occasional cleaning of very dirty keys I've used alcohol or the Fantastik mix. Keybrite is very nice but slower. I've also used water with a little dish soap, which is even slower. I think alcohol or strong cleaning agents are not good for ivory in the long term.
------------------------------
Mario Igrec, RPT, MM
Chief Piano Technician, The Juilliard School
http://www.pianosinsideout.com------------------------------
Original Message:
Sent: 05-03-2020 09:24
From: Israel Stein
Subject: Disinfecting pianos
Since the subject of disinfectants has come up, let's address it on a more practical level under two assumptions:
1. This virus is going to be with us for a while, and it is some time before effective medication or vaccine will be available.
2. Some institutions are going to reopen before effective treatment or vaccines are available.
How do we keep multiple users of pianos in studios from spreading the infection by way of the piano?
I was approached by a teacher at a conservatory who expects to be called back to work sometime in the near future and assumes that she should be disincfecting the piano between students. She asked how she could do this without damaging the piano or perhaps (mildly) poisoning the students.
I have my own thoughts on the subject, but I just wanted to throw the question out to hear what others have to say
Thank you,
Israel Stein
------------------------------
Israel Stein RPT
P.O. Box 68141
Jerusalem, Israel 9168002
510-558-0777
istein248@gmail.com
------------------------------