Discover a simple way to clean dirty grout lines and remove everyday grime, stains, and buildup using an easy household cleaning method.
Dirty grout can make an otherwise clean floor or bathroom look old and neglected. The good news is that you don’t always need expensive cleaning products or hours of scrubbing.
The Quick Trick for Cleaning Grout
For everyday dirt and grime, start with a paste made from baking soda and a small amount of water.
What You’ll Need
- Baking soda
- A small amount of water
- An old toothbrush or grout brush
- A clean microfiber cloth
- Warm water
Step-by-Step Method
1. Make the paste
Mix baking soda with a little water until you have a thick, spreadable paste.
2. Apply it to the grout
Spread a thin layer over the dirty grout lines and let it sit for several minutes.
3. Gently scrub
Use an old toothbrush or grout brush to work the paste into the grout. For lightly soiled grout, a few passes may be enough to loosen surface dirt.
4. Wipe clean
Use a damp microfiber cloth to remove the loosened grime and residue.
5. Dry the area
Wipe the grout with a clean, dry cloth and allow it to dry completely.
What If the Grout Is Really Dirty?
Heavily stained, moldy or deeply discolored grout may require a dedicated grout cleaner and more thorough cleaning. A single swipe cannot reliably remove years of embedded grime.
For mold or mildew, improve ventilation and address moisture problems rather than simply covering the discoloration with a cleaning product.
Important Safety Tip
Never mix household cleaning chemicals unless the product label specifically says they are compatible. In particular, never mix bleach with ammonia, acids, vinegar, or other cleaners, because dangerous gases can form.
Also test any cleaning solution on a small, inconspicuous section first, especially with colored grout or natural stone.
The Bottom Line
For ordinary surface dirt, a simple baking-soda paste, gentle brushing and a thorough wipe can make grout look noticeably cleaner. The key is to avoid damaging the grout while loosening the buildup.
Clean grout doesn’t have to mean hours of hard scrubbing—start with a gentle method and increase the cleaning strength only when necessary.