It's not often K&K wash their hands either.
But to be a little "devil's advcocate", why do one need to wash after? They use paper inbetween the hand and croch. The hands isn't touching what comes out. So they isn't dirtier than they would be if one just walked in the bathroom. Sometimes it people gets a little to paranoid about bacteria.
Haven't seen to many complain that Kristy yesterday came home, took a shower, than put the same panties back on that she had been used the whole day. And even this day after she still wares it. That they don't change their home t-shirts that much, I can releate to, I also us a home t-shirt day after day, when it gets real dirty I wash it. But when you go out, one changes into something new.