I have seriously asked this question of several people in the last few days. It's a weird query, I know, but for some reason it's been bugging me.
Why don't we wash our toothbrushes in the dishwasher?
Okay, here's my logic: you eat off of a fork and a spoon and a plate and drink out of a cup, all of which are either handwashed or washed in the dishwash apparatus. Why, then, do we not wash something that we stick in our mouths more than once a day and leave to fester and rot with our daily mouthgerms all over it?
What does this problem say about the philosophy of hygiene in our culture?
I think I know the answer, or at least a rough approximation of one, but any one answer I come to seems unsatisfactory. It could be that soap may get caught in the bristles and we would slowly damage our teeth or, worse yet, poison ourselves to death. But that seems highly unlikely.
Maybe toothpaste is an adequate enough of a cleansing agent not to require outsourced cleansing. I mean, it may be that cleansing a cleanser itself is redundant.
...and I think I just answered my own dumbass question.
The preceeding was an ill-conceived thought experiment.
(Just trying to get something going, for mine brain hath grown stagnant).