Rust stains on concrete

Any way to get rid of them (from summer fertilizer). Tried CLR with no results. Any other ideas?
Art
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Barkeeper's Friend, which has oxalic(sp>) acid.
Rust remover, aka naval jelly, Phosphoric acid for bad stains.
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John Hines wrote:

"Zud" will work for small stains. It's an abrasive powdered cleaner with oxalic acid in it.
I used a phosphoric acid based dairy cleaner for some really bad rust stains a couple of months ago and it worked surprisingly well.
Bob
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pressure washer???

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<< Any other ideas? >>
Some automotive radiator flushes are good sources of oxalic acid. Pretty cheap, too.
HTH
Joe
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Oxalic Acid is packaged as Wood Bleach and is only ingredient listed on label. Check label for contents as it isn't the only wood bleach.
On 20 Jul 2004 00:09:29 GMT, snipped-for-privacy@aol.comtosspam (Joe Bobst) wrote:

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The depot has Behr stain & rust remover for concrete.

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On Mon, 19 Jul 2004 12:44:52 -0500, "Art"

the whole of the floor area..in the end <G> ..oh !.. and Do take notice of the MSDS attached to the "use of" instructions.
cheerio
BTZ
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Mix a lb or more of Iron Out or Super IO or Rust Pro in a bucket of warm water and apply it to the stains.
Gary Quality Water Associates www.qualitywaterassociates.com Bulletin Board www.qualitywaterassociates.com/phpBB2
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