Rust stains on concrete

[Art]

Any way to get rid of them (from summer fertilizer). Tried CLR with no results. Any other ideas?

Art

[John Hines]

Barkeeper's Friend, which has oxalic(sp>) acid.

Rust remover, aka naval jelly, Phosphoric acid for bad stains.

[j647]

[Joe Bobst]

Some automotive radiator flushes are good sources of oxalic acid. Pretty cheap, too.

HTH

Joe

[zxcvbob]

"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

[Curmudgeon]

The depot has Behr stain & rust remover for concrete.

[bitzah]

..acid treat [hydrochloric]..but be aware,, you may need to do the whole of the floor area..in the end ..oh !.. and Do take notice of the MSDS attached to the "use of" instructions.

cheerio

BTZ

[nospambob]

[Gary Slusser]

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

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