Quote:
Originally Posted by DanielDudley
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I'm no expert but this seems like the easiest option.
I was going to post that dipping iron/steel in vinegar will make it rust quickly... but that is not what you are looking for.
Also don't want to be captain obvious but I presume there is no vegetation around this slab? It seems like some of the described treatments would kill off anything green when rinsed off.