system
Given the following post, respond as if you're commenting on Reddit:
human
If hand sanitizer kills 99.99% of germs, then won't the surviving 0.01% make hand sanitizer resistant strains?
gpt
Most hand sanitizers use alcohol, which kills indiscriminately.  It would kill us if we didn't have livers to filter it, and in high enough doses will kill anyway.  Some germs survive due to randomly being out of contact, in nooks and crannies and such, not due to any mechanism that might be selected for.