What product would be best for cleaning rust spots from my cement porch?

  23 answers
  • Kelly F Kelly F on May 29, 2012
    Muratic acid. Just follow the directions on the gallon jug. You can buy it at about any hardware store.

  • Berta M Berta M on May 30, 2012
    A product called wink. It comes in a brown bottle. I buy it at ace hardware.

  • Donna Marie P Donna Marie P on May 30, 2012
    white vinegar should work ... sprinkle some baking soda on it , let it fizz then scrub with a good brush

  • Pat W Pat W on May 30, 2012
    Rust stains are readily removed by application of dilute phosphoric acid. Phosphoric acid won't burn the concrete as muriatic can do. A phosphoric acid based product called CRC is readily avilable at hardware stores. It can also be used to clean A/C coils and screen room enclosures made of aluminum.

  • Pat W Pat W on May 30, 2012
    Footnote: Orthophosphoric acid is what makes cola beverages tangy. Try some Coca Cola.

  • Sandy D Sandy D on May 30, 2012
    will any of these suggestions work on grease stain on concrete?

  • Kelly F Kelly F on May 30, 2012
    If the phosphoric doesn't work on the rust- use the muriatic- just dilute it a little- pour it on- work it with a stiff broon and hose it off. You can reapply if necessary. Coca Cola won't remove rust from porous concrete IMHO.

  • Therese C Therese C on May 30, 2012
    Cindy go to this website: MyCleaningProducts.com they carry a product called Rusterizer for $15.97 and it is completely organic. This stuff really works...Good luck!

  • Kate M Kate M on May 30, 2012
    CLR...works great!!!

  • Sue A Sue A on May 30, 2012
    what about good old forgotten about naval jelly? last time I asked where it was at the hardware store, the kid said it would be with lotions or baby products...say what!

  • Cathy B Cathy B on May 30, 2012
    @ sandy...grease off cement. Thereis a sawdust product that is sprinkled on and left(if real bad a couple of days I'll try and find name for you.

  • Cathy B Cathy B on May 30, 2012
    Bar Keepers Friend comes in a can like comet,will take rust off of any thing. wet concrete and sprinkle on and make paste and leave on for hour or so and rinse off

  • Debi L Debi L on May 30, 2012
    I 2nd Berta's suggestion to remove rust stain from anything -- porous or non-porous surface. Rust doesn't stand a chance against Wink. Erased deep rust stain from carpet almost as easily as it worked on porcelain.

  • Debi L Debi L on May 30, 2012
    Naval jelly great on metal but never tried it on porous surface.

  • Beth S Beth S on May 30, 2012
    I just read that lemon juice will remove rust. Worth a try before spending a lot of money.

  • Cindy H Cindy H on May 30, 2012
    Thanks everyone for the suggestions! I'll give some these a try.

  • Alethea S Alethea S on May 30, 2012
    Zud or Bar Keeper's Friend. Make a paste and smear it on the spot. You can scrub if you need to. Rinse!

  • Sandy D Sandy D on May 30, 2012
    Thanks Cathy B, I'll watch for the name of the product

  • Cathy B Cathy B on May 31, 2012
    @ Sandy, the product is ZEP Sweeping Compound put in on and leave as long as possible. We had a contractor's car leave big oil spots in our drive way and then there were some old ones and it came right up. There is a wheel cleaner by Casterol(can purchase at auto parts store) that will loosen the oil if it still hangs around. Good luck.

  • Stone-Crete Artistry Stone-Crete Artistry on May 31, 2012
    acetone mixed with bakingsoda to a paste....might take a couple times..acid will etch

  • Peace Painting Co., Inc. Peace Painting Co., Inc. on May 31, 2012
    Rust stains are easily removed using oxalic acid. That is one of it's specialties. We have used it many times with great success. CP

  • Sherrie S Sherrie S on Jun 01, 2012
    Cindy, if sprinkler rust is your type of problem then I can help you. It really depends on what kind of rust you have.

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