Home made 2 X 10 lift + self serve car wash = clean chain

Pop the covers etc. off at home, & park right over the floor drain while spraying. Most 'legal' car washes coalesce waste water to remove oils, so it's not about throwing oil into the water table.

A little OT - I've tried many of the magic chain elixirs, and have finally settled on Cyclo brand white lithium grease spray. It goes on as a liquid, and sets up as a grease. So far it's the best performer with regard to penetration, fling, and grit attraction issues. Even better than the Bel Ray.