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I have leaked a liquid mix of Spray Foam Sealant Dispensing Gun Cleaner and orange spray foam from a garbage bag onto a concrete floor, leaving an orange stain.
What's the easiest way to remove the colored stain?
Grind it off. Or paint over it. Solvents don't work once the stuff has cured.
Try power sprayer, rent it or buy it.
I use gasoline to wash it off but that is no no for many
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