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Getting stains out of concrete

733 Views | 6 Replies | Last: 3 mo ago by Naveronski
zooguy96
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9:37a, 10/13/25
AG
Had some plants on the front porch. Left some dirt stains. Pressure washer didn't fully remove.

What have you used in the past that worked?
I know a lot about a little, and a little about a lot.
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1990Hullaballoo
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10:25a, 10/13/25
AG
TSP - Tri Sodium Phosphate. If it will come off, that will take it off.Check ingredients and make sure it has TSP in it, some do not.

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zooguy96
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In reply to 1990Hullaballoo • 10:44a, 10/13/25
AG
1990Hullaballoo said:
TSP - Tri Sodium Phosphate. If it will come off, that will take it off.Check ingredients and make sure it has TSP in it, some do not.



Ok, cool, I already have some TSP I bought to clean my vinyl siding. Appreciate it.
I know a lot about a little, and a little about a lot.
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Naveronski
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In reply to 1990Hullaballoo • 11:58a, 10/13/25
AG
I use that mixed with detergent to wash dishes.

What's the process on concrete? Wet the concrete, sprinkle that on it, let sit, wash away?
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zooguy96
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In reply to Naveronski • 12:02p, 10/13/25
AG
Naveronski said:
I use that mixed with detergent to wash dishes.

What's the process on concrete? Wet the concrete, sprinkle that on it, let sit, wash away?

I'd assume something like brush it on, let it sit, and then pressure wash with it. But, I'm just guessing.
I know a lot about a little, and a little about a lot.
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1990Hullaballoo
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12:04p, 10/13/25
AG
You can pressure wash after, but the chemical action is what does most of the work.
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Naveronski
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In reply to zooguy96 • 12:39p, 10/13/25
AG
Sounds good to me, thanks.
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