Always follow instructions on the product labels, technical information and videos.
Always test products on a small area first.
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It is vitally important that you understand that you cannot use any acidic products on concrete which does make some cleaning jobs more difficult.
For Cement Staining. This is a difficult issue to resolve with a concrete because you must NOT use any acid based products. Cement residues are usually removed with an acid but you must NOT do this. You can use Powerase diluted 1:3 with water to help remove cement. You will need to scrub with brushes, nylon pads or machinery (on larger areas). Be careful not to damage the stone by scrubbing too vigorously. Rinse well. Always do small test areas first.
For Efflorescence (white mineral salts that can appear on a stone as it dries) the same issues will be encountered as when removing cement residues from concrete because you cannot use acid. Fortunately, efflorescence is not often an issue on concrete. If required, you can use Powerase diluted 1:3 with water to help remove efflorescence. You will need to scrub with brushes, nylon pads or machinery (on larger areas). Be careful not to damage the stone by scrubbing too vigorously. Rinse well. Always do small test areas first
For Mud you will find that Powerase is very effective. A wet vacuum cleaner can be used to remove the cleaning solution and rinsing water which will do a much better job than using a mop or a hose.
For Leaf and Plant Stains use Biorase.
To remove BBQ Grease and Oily or Greasy Food Stains use Powerase.
To remove "Coloured" Food Stains such as Tea and Wine use Biorase
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