basically hand-sanitizer is a scam except where it is used in hospitals simply as a matter of speed ...
A friend of mine was (before she retired) the VP of a hospital in FL. She helped institute the policy of having foam sanitizer dispensers on the wall by the light switch in all rooms. She told me they cut hospital caused infections by 30%.
Before the days of hand sanitizers, when I was vendor to gift shops & had to handle a lot of stuff touched by germie kids, I carried a roll of paper towels and a bottle of isopropyl alcohol in the car and used after each stop. I cut my winter colds by 50%.