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DIY
3 min read
Updated March 2026

How to Clean Grout

Make dirty tile grout white again with DIY methods

Quick Answer

Baking soda paste + scrub brush. Add vinegar for tough stains. Hydrogen peroxide for deep cleaning. Seal after cleaning.

Step-by-Step Guide

1

Try Baking Soda Paste First

Mix baking soda + water into thick paste. Apply to grout lines. Let sit 10-15 minutes. Scrub with stiff brush.

💡Use an old toothbrush for small areas or grout brush for large areas.
2

Add Vinegar for Tough Stains

Spray white vinegar on baking soda paste (it will fizz). Let bubble 5 minutes. Scrub and rinse with warm water.

💡Don't use vinegar on natural stone - it can etch marble and granite.
3

Use Hydrogen Peroxide for Deep Stains

Mix hydrogen peroxide + baking soda into paste. Apply, wait 10 min, scrub. This bleaches without harsh chemicals.

💡Spot test first on hidden area to check for discoloration.
4

Seal When Clean

Once grout is clean and dry, apply grout sealer to prevent future staining. Reapply yearly.

💡Sealed grout is much easier to keep clean and resists mold/mildew.

Frequently Asked Questions

Can I use bleach on grout?

Yes, diluted bleach works for white grout. Avoid on colored grout (may fade). Ensure ventilation.

Why is my grout still stained?

Old, unsealed grout absorbs stains permanently. May need professional cleaning or re-grouting.

How often should I clean grout?

Deep clean every 1-2 months. Quick wipe weekly. Prevention (sealing, drying after showers) reduces cleaning needs.

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