Thanks for the link. I teach soap and water, alcohol wipes if water isn't available. The main point here is to get traces of carb off the finger. Instant hand sanitizer kills germs, but does nothing to get rid of traces of carb. Germs are far less an issue in BG testing than inaccurate readings from carbs left on fingers.
We sometimes see parents who scrupulously scrub their toddlers fingers with an alcohol wipe before testing...toddlers who haven't touched food since the last hand washing. But the parents haven't washed their hands before reaching in the vial and fishing out a test strip. Now the strip is contaminated with the carb residue on the parent's fingers. Another culprit for inaccurate testing...retesting after treating a low without rewashing hands ("I just washed them a minute ago before I ate 'blank' to treat my low!"). Now the BG looks sky high from the residue on the finger...and the BG might still be low!