Nah, they just let stuff accumulate until there’s no difference between using the hot tub and being in a bukkake video. :eek: 
Seriously, I’d have to assume they do. The hot tubs at the places the missus and I stayed at looked clean to me.
RTFirefly
IIRC, I think that stuff in the hot tubs is the basis for moonshine.
- (Italics mine)
I guess that only counts to the extent that you’re gonna’ hold it against him, H.Q.