If hand sanitizer kills 99.9% of germs, what stops us from using that all of the time instead of hand washing?

Question

If hand sanitizer kills 99.9% of germs, what stops us from using that all of the time instead of hand washing?

In: Biology

Answer 1

Because if there’s poop on your hands, sanitizer will kill 99% of the germs in that poop. But there will _still be poop_ on your hands.