SLU must have a garden hose you can use somewhere. Go to store and get a bush and some greaser. like simple green. Clean chain with brush and a rag. Apply a light coat of wd40 to the chain. you will be all set and shiny.
Ignore those who say wd40 is not good. yes there are better but it works just fine. My favorite wd40 myth is that it attracts dust. How does it do that? Is it a dust magnet???
I was trying to figure out where to get a hose from I could ask security or maybe go to a ....car wash?
you need a ..... bike wash. Rest assured slu must have at least 1 hose.