NaOH. ProTools Brick cleaner. ProTools graffiti remover. Sherwin William’s graffiti remover. Oxalic acid. Muriatic acid… I learned a bunch of things that DON’T work… so that’s something, right?
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Now you are ready for your final lesson. Walk away.
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This is wicked stuff. It will burn your skin off. Hazard class 4. Full rubber suit. But it sounds like they have a handle on the situation.
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The after pic is to the left of the door, but all the bad stuff to the right of door in 1st pic.
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Sorry, it wasn’t in the chemical category so I didn’t this one…someone please @CaCO3Girl me next time.
I think I’ve seen that before. The cheapest and safest option I suggest is a caustic cleaner with butyl…have you tried the purple stuff that is usually called purple lightning, or purple magic…something along those lines?
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Purple power ? Lol
Yes, purple power is another name 
Is that after Purple Power Instock? Thank you.
F9 efflo
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what was it that you used?
OneRestore
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