I have a question which I haven't seen adressed in any of the forums. It may not be purely a cleaning question, but I think this is the best forum.
About a year ago, my city laid new sidewalks on the street. Everyone else got whiteish gray sidewalks and it all looks nice. Unfortunately, right in front of my building, the sidewalk has very large black or dark brown blotches. I've waited about a year for them to fade, but they are definitely permanent.
I've written to the city as well as the concrete contractor the city used, and I've heard nothing back at all. So my question is, can I do something about this myself? Is there any way to bleach out the dark blotches in the sidewalk? Would I rather need to cover them up in some fashion? I would guess that turning them whiter is the easier thing to do, but I'm really at a loss here.
Does anyone have any advice for me? Thanks in advance!