That's fine up in the frozen North, Ian, but down here in the swampy South, hand sanitizer before you play won't stop you from sweating up a storm WHILE you play!

But yes, washing your hands before you play, especially after setup, will go a LONG way to keeping your axe clean and problem-free... Along with good cases, and plastic (NOT cloth) covers for your keyboards, it's the best way to ensure that, if you WANT to get ten years out of your favorite arranger, you can