I have a bunch of tool boxes used by masons, which have some concrete stuck on them.
I want to remove that stuff quickly and efficiently and it is a lot of items (four huge Knaack field stations, Knaack gangboxes and many concrete saws).
What is the best and easiest way/chemical etc thanks
I tried a power washer, it seems to work on some stains and, miraculously, not on others.
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