Or a fork or a glass, when washing up by hand?
It's the 20s hands thing. It occured to me,whilst washing up, that if a quick rub for your hands isn't enough, maybe it's not enough for a mug.
I'll confess, I wash them all until they look clean and no more. Is that enough?
Can I say, I'm really not very worried about it, I just wondered of I'm doing it right. 