How do you remove rust stains from concrete? I tried rust-dissolving gel, let it soak 20 minutes, scrubbed for 10 minutes with a stiff brush. No change. Also, how do you remove tar from concrete? - ...

Tar is sneaky. Because it’s used to patch asphalt that’s roughly the same color, you may end up stepping on tar without realizing it. Or maybe you drove on a road repaired with tar on a hot day, came ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. How do you remove rust stains from concrete? I tried rust-dissolving gel, let it soak 20 minutes, scrubbed for 10 minutes with a ...