How do I Clean Dirty Grout Between Bathroom Floor Tiles?

Written by mel frank
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How do I Clean Dirty Grout Between Bathroom Floor Tiles?
Scrub dirty bathroom floor grout with a toothbrush. (bathroom image by Mikhail Olykainen from

Dirty grout is a common problem, especially when it comes to the bathroom floor. Grout is typically a lighter colour than the surrounding tile, so while the tile itself may not dull as quickly, the grout regularly becomes soiled and discoloured as residue, soap, lotions, make-up and other elements spill onto the floor. To clean the grout properly, you need to do a bit more than a simple mopping, which will work to clean the tile but not always the grout.

Skill level:

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Things you need

  • Bucket
  • Water
  • Oxygen bleach
  • Toothbrush
  • Nylon scrub brush
  • Cleaning rag or mop

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  1. 1

    Fill a cleaning bucket with 1 cup oxygen bleach and 1 gallon warm water.

  2. 2

    Start in the far corner of the bathroom, dipping either a nylon scrub brush or an old toothbrush into the bleach solution. Scrub the brush over the grout, applying pressure as needed until you remove all build-up. If the floor grout hasn't been cleaned in a while this can take a bit of time and pressure.

  3. 3

    Rinse a cleaning rag or cleaning mop under warm water, and wring out the rag or mop. Rub this over your entire bathroom floor to lift all remaining build-up.

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