3 points
My bad, I interpreted “wash” as just cleaning in general. Yeah, there’s not much point in putting it through a dishwasher unless you’re just being lazy
3 points
Depends how much gunk is on there, but if you do it somewhat regularly it could. Though you’ll definitely need to give it a proper cleaning eventually, as it’s still gonna get sticky from all the oils and such.
Shouldn’t be very often, though. Depending on how much you smoke, you may only need to do it once a year or even less than that