Eli5: Why are we told to wash our hands for 20 seconds to kill all the bacteria etc, but not told anything similar for dishwashing? What makes dishwashing different, if anything?

Question

Eli5: Why are we told to wash our hands for 20 seconds to kill all the bacteria etc, but not told anything similar for dishwashing? What makes dishwashing different, if anything?

In: Biology

Answer 1

Its part because bacteria wont stick to glass, porcelin, silverwear ect quite as hard as it will stick to skin and part because the people making these reccomendations know humans are gonna screw it up.
If you ever see a kid washing their hands theyre absolutely trash at it. They dont fully soap up they just kinda rinse their hands without scrubbing everywhere properly but if they were to wash a full 20 secounds then no matter how trash they are as scrubbing theyll at least get it fairly clean. These reccomendations are set to avoid human error because people are bound to get lazy or do things wrong and half-assed washing your hands for 20 secounds is better than half-assed washing for 10.