Best way to clean cement?
Anyone have a good product or method for cleaning cement? I am looking for a way to clean our cement front steps. The steps are fairly high and steep. I have a couple of large containers at the top that I frequently replant and potting soil always gets on the steps. I sweep and hose the steps down but that doesn't really get them clean.
I would do the repotting on the ground, but the pots are ceramic and quite heavy once filled with soil. There is a perennial bed, shrubs and lawn on the sides of the steps, so I can't use something that would produce toxic runoff.
Thanks for any advice