How to Clean Stained Grout Lines


Normal wear-and-tear causes unsightly discoloration to grout -- there's really no way to avoid it, especially on tile floors. Without the right product, it's difficult to bring back the original white color. Harsh chemicals like chlorine bleach will remove the stains, but you can get grout clean with a much gentler, fume-free product known as oxygen bleach. Look for tubs of oxygen-bleach powder in supermarkets and home and garden centers.

Things You'll Need

  • Oxygen bleach
  • Bucket
  • Wooden spoon
  • Spray bottle
  • Scrub brush
  • Microfiber cloth
  • Combine 1/2 cup of oxygen bleach and 1 gallon of hot tap water in a bucket. Stir with a wooden spoon until all the powder dissolves.

  • Pour the oxygen bleach solution on the tile. If you're cleaning tile walls, apply the solution generously with a spray bottle.

  • Allow the oxygen bleach solution to sit for 20 to 30 minutes; for walls, spray on more solution every five minutes.

  • Scrub the grout with a scrub brush.

  • Rinse off the solution with fresh water.

  • Wipe the grout dry with a clean microfiber cloth.

Tips & Warnings

  • For the best results, apply the oxygen-bleach solution to completely dry grout.
  • If your grout is extremely stained, leave the solution on for an hour, reapplying as it dries out.
  • Don't mix oxygen bleach with cold water -- it's not as effective.
  • Don't mix oxygen bleach with boiling water. It should be hot, but not so hot that you can't touch the water without burning yourself.

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  • Photo Credit Liquidlibrary/liquidlibrary/Getty Images
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