If you were really in a hurry, you should have ordered it sooner!But waiting after a mouthpiece shows up, I dunno, that'd be really hard! Even like 15 minutes!
Great advise, I have myself advised chlorhexidine for years here.I use Hibiclens (chlorhexidine gluconate solution) to clean mouthpieces--have been doing so for nearly a decade without any issues, but I receive some really nasty mouthpieces from people Otherwise, soap and water are just fine.
+1. No harm done to a mpc by wiping it down with alcohol. When wiping with a cloth soaked in alcohol, the alcohol volatilizes (evaporates) very quickly, yet it kills 'germs' on contact as Phil says, assuming it's at least 60% alcohol (so vodka isn't strong enough--keep the vodka for consumption!).Alcohol wont discolor it if just cleaned. If you soak the piece that may be another story. Alcohol pretty much kills on contact if it is strong. Then you can wash with soapy water.
I got a new guitar last week - let it sit in quarantine for several days, but chose not to wash it.While the threat is low, as Dr. G. points out, why risk it? The virus can live on paper wrapping for 24 hours, and on plastic and stainless steel for up to 72 hours. I'd expect HR to be in a similar range, though no one has tested mouthpieces to my knowledge.
Just leave the parcel for three days before opening it, then wash it with dish soap for 20 seconds. As with most activities, the anticipation will add to the eventual thrill.