Without cleaning, your grout changes from a clear white to an unappealing brown. With baking soda, you can effectively remove dirt and mold stains without having to hire a professional. To get your grout clean again, make a baking soda and water paste, apply the paste, add vinegar, and scrub. For tougher stains, such as mildew, make a paste out of baking soda and hydrogen peroxide, apply it to the grout, and scrub.

Method 1
Method 1 of 2:

Cleaning with Baking Soda and Vinegar

  1. 1
    Mix baking soda and water into a paste. In a small bowl, combine equal amounts of baking soda and water. Stir the ingredients together until they form a paste that is easy to apply to the grout.[1]
  2. 2
    Apply the paste to the grout with a brush. Pick up the paste with your brush and spread it over the grout. You can apply it with the same brush you’ll use to scrub the grout later. Grout brushes and other stiff-bristled scrub brushes can be found at home improvement stores.[2]
    • If you don’t have a scrub brush, a sponge with a scouring side or an old toothbrush also work well.
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  3. 3
    Mix vinegar and warm water in a spray bottle. Make sure the water is warm before you add it to the spray bottle or a bowl. Combine the water with an equal amount of vinegar. Place the mixture in a spray bottle to make applying it easier.[3]
  4. 4
    Spray the vinegar mixture onto the grout. Spray vinegar directly upon the baking soda. A single spray will be enough to cause the baking soda to begin to fizz.
  5. 5
    Let the baking soda rest for five minutes. You'll see the vinegar reacting with the baking soda, causing a fizz. During these five minutes, the fizz will loosen the grime on the grout.[4]
  6. 6
    Scrub the grout. Use a grout brush to work the baking soda further into the grout. Alternatively, scrub with a stiff-bristled brush, scouring sponge, or toothbrush. Scrubbing takes some muscle power, but the effort removes most of the grime.[5]
    • Look out for dark areas indicating where grime remains on the grout. Try scrubbing these areas again or clean them with hydrogen peroxide.
  7. 7
    Wipe up the cleaner. After scrubbing, you’ll be left with dirty vinegar and baking soda. Apply paper towels to pick up the mess or use old rags if you wish to save on paper. A sponge can also help you loosen any bits of grime and cleaner on the grout.[6]
  8. 8
    Mop the floor. Optionally, you can give your floor a shine. First, sweep or vacuum up any baking soda still left on the floor. Afterwards, mop the floor as you normally would. Grout you cannot reach by mop can be wiped clean by a rag dampened in clean water.
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Method 2
Method 2 of 2:

Removing Tough Stains with Hydrogen Peroxide

  1. 1
    Mix baking soda and hydrogen peroxide. In a bowl, combine two parts baking soda to one part hydrogen peroxide. Mix the ingredients together to form a paste that can be easily applied to the grout.[7]
  2. 2
    Apply the paste to the grout with a brush. Again, you can apply your cleaning paste with the same brush you’ll use to scrub the grout later. Specialty grout brushes can be purchased at home improvement stores, but you can also use other stiff-bristled scrub brushes, a sponge with a scouring side, or an old toothbrush.[8]
  3. 3
    Allow the paste to sit for a few minutes. Give the paste up to five minutes to soak into the grime. This should make scrubbing out tough stains, including mold and mildew, easier.[9]
  4. 4
    Scrub the grout. Use your brush to work the cleaner into the grout. You should see the stains begin to lift. Continue to scrub any stains by hand until they are removed.[10]
  5. 5
    Wipe up the mess. Use paper towels to pick up excess paste and any grime removed from it. Substitute in old rags if you wish to avoid wasting paper.[11]
  6. 6
    Mop up the floor. Optionally, mop the floor as you usually do. This will remove any dirt and paste you missed as well as give your floor a nice shine. For grout you cannot reach by mop, dampen a rag in clean water and wipe.
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What Are Efficient Ways To Clean Bathroom Grout?

Expert Q&A

  • Question
    How can I get my grout white again?
    Chris Willatt
    Chris Willatt
    House Cleaning Professional
    Chris Willatt is the owner and founder of Alpine Maids, a cleaning agency in Denver, Colorado started in 2015. Alpine Maids has received Angie's List Super Service Award for three years in a row since 2016 and has been awarded Colorado's "Top Rated Local House Cleaning" Award in 2018.
    Chris Willatt
    House Cleaning Professional
    Expert Answer
    You can buy a special grout brush, but a scrub brush or an old toothbrush will work as well.
  • Question
    Is baking soda good for cleaning grout?
    Chris Willatt
    Chris Willatt
    House Cleaning Professional
    Chris Willatt is the owner and founder of Alpine Maids, a cleaning agency in Denver, Colorado started in 2015. Alpine Maids has received Angie's List Super Service Award for three years in a row since 2016 and has been awarded Colorado's "Top Rated Local House Cleaning" Award in 2018.
    Chris Willatt
    House Cleaning Professional
    Expert Answer
    Baking soda works well to scrub the grout, but it is not going to kill the mold, so if the grout is moldy, you would need to use bleach, like a bleach pen, afterwards.
  • Question
    Will the baking soda and vinegar whiten tile grout?
    Fizzy Hacks
    Fizzy Hacks
    Community Answer
    Yes, but test on a small and inconspicuous area first, just in case the grout doesn't respond well to the mixture. Wait for 24 hours first, then check the cleaned area and go ahead if it worked well.
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Things You’ll Need

  • Baking soda
  • Vinegar
  • Spray bottle
  • Water
  • Measuring cup
  • Grout brush or other scrub brush
  • Small bowls
  • Rags or paper towels

About This Article

Chris Willatt
Co-authored by:
House Cleaning Professional
This article was co-authored by Chris Willatt. Chris Willatt is the owner and founder of Alpine Maids, a cleaning agency in Denver, Colorado started in 2015. Alpine Maids has received Angie's List Super Service Award for three years in a row since 2016 and has been awarded Colorado's "Top Rated Local House Cleaning" Award in 2018. This article has been viewed 193,048 times.
72 votes - 93%
Co-authors: 7
Updated: November 2, 2021
Views: 193,048
Article SummaryX

To clean grout with baking soda, start by mixing equal parts baking soda and water to form a paste. Then, apply the paste to the grout using a scrub brush, sponge, or old toothbrush. Next, mix equal parts warm water and white vinegar in a spray bottle and spray the mixture onto the grout. Let the baking soda and vinegar fizz for 5 minutes, which will help loosen dirt and grime. Finally, scrub the grout one more time before wiping up the paste with a rag or paper towel. To learn how to get rid of tough stains on grout with hydrogen peroxide and baking soda, scroll down!

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