how does soap work if we put it on our hands and then take it off immediately? It doesn’t soak in like hand sanitizer
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One (quite gross) metaphor that stuck with me when we all learned a LOT about handwashing in 2020 was: say you have rats (bacteria) in your cellar. Hand sanitizer is like putting poison down: it kills them all but you still have a cellar full of dead rats. Soap is like opening up the drain and using a firehose: it doesn’t matter if they’re not all dead, they’re simply not in your cellar any more.
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