Originally Posted by
noimagination
Personally, I'd rather deal with cold fingers and wash the bike outside (self-serve carwash; hose in courtyard; whatever is available) than have to clean grease and grime off the tub/shower enclosure after washing the bike there.
My worry would be having all the grime and grit go down the drain. I live in a "Chicago-style brick bungalow" (Google it, it's a recognized architectural style) and the tree roots are always getting into the sewer discharge pipe. They make a maze that traps everything that goes down the drain. The less debris I wash down, the better.
Eventually I'll have to spring for new PVC sewer pipe.... $$$$