Review - Rust Stain Remover on Concrete

A review of two Rust Stain Removers that were available at the local hardware store. I had some serious rust stains on concrete that I needed to get removed. Rust Aid and Iron Out were the two products reviewed.
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RustAid can be purchased from the following link:
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➡amzn.to/3P1qT5X (Amazon)

[@Jayman001]

I think you used Rust Aid on a much smaller area

[@michaellampe4505]

How did you get the white residue afterwards?

[@AFaO]

I did not have any white residue. The 'brightness' in the pictures is just the bright / clean concrete color. After a few weeks it all blended in with the existing 'aged' concrete.

[@chrisnyc4688]

i use Rid-O-Rust (rust in irrigation water)

[@AFaO]

I imagine it would perform similar to the Rust Aid since they both have the same active ingredients, Oxalic acid.