Dirty shower grout makes even the cleanest bathroom look neglected. Soap scum, mold, and mildew love to settle in those porous lines, turning them yellow or brown over time.
You don’t need to retile your entire shower to fix it. We will cover the best homemade solutions and deep-cleaning methods to restore your grout to its original brightness.
Key Takeaways
- DIY Solution: Mix baking soda, hydrogen peroxide, and dish soap for an effective homemade paste.
- Deep Cleaning: Use steam cleaners or oxygen bleach for stubborn stains and grime.
- Avoid Damage: Skip vinegar on unsealed grout or natural stone tiles to prevent erosion.
- Maintenance: Squeegee walls daily and seal grout lines annually to prevent mold buildup.
Best Homemade Tile Grout Cleaner
You likely have everything you need to tackle grime right in your pantry. This DIY recipe is powerful, affordable, and safer than harsh chemical fumes.
What You’ll Need
Gather these supplies before getting started:
- Solvents: Liquid dish soap and hydrogen peroxide.
- Abrasive: Baking soda.
- Safety gear: Protective rubber gloves.
- Tools: Small squeeze-top container or bowl.
Steps to Clean Grout with Homemade Grout Cleaner
Safety First
Put on your protective gloves. While hydrogen peroxide is mild, it can irritate open cuts or sensitive skin.
Take your squeeze bottle or mixing bowl and ensure it is free of dust. Pour in half a cup of baking soda and a quarter cup of hydrogen peroxide. Add one teaspoon of liquid dish soap to cut through the grease.
Shake the bottle or stir the mixture until it forms a smooth paste.
Squeeze or spread the solution directly onto the grout lines. Let it sit for at least 10 minutes to break down the dirt. Scrub vigorously with a stiff brush and rinse with hot water.
How to Clean Grout in the Shower
Different stains require different approaches. Here are the most effective standard cleaning methods.
With Vinegar
Vinegar is a classic acidic cleaner, but it is only safe for sealed grout and ceramic or porcelain tiles.
Fill a spray bottle with equal parts warm water and white vinegar. Spray the grout lines generously and let it dwell for five minutes. Scrub with a stiff-bristled brush to lift the dirt.
Important
Never use vinegar on unsealed grout, travertine, limestone, or marble. The acid will eat away the stone and weaken the grout.
With Baking Soda
Baking soda acts as a gentle abrasive that scrubs away surface stains without scratching tiles.
Mix baking soda and water to create a thick paste. Apply it to the grout lines. For extra cleaning power, spray the vinegar solution mentioned above onto the paste.
The mixture will fizz and bubble. Once the reaction stops, scrub the lines with a brush, rinse thoroughly with water, and wipe dry.
With Hydrogen Peroxide
Hydrogen peroxide is a natural whitening agent perfect for moderate discoloration. You can use it straight from the bottle or mix it with baking soda for a scrubbing paste. It is generally safe for both sealed and unsealed grout.
With The Pink Stuff
The Pink Stuff is a popular abrasive cleaning paste that works wonders on hard surfaces. It is excellent for spot-treating cleaning shower tiles and stained grout lines.
Scoop a small amount onto a sponge or old toothbrush. Work the paste into the grout in circular motions. Rinse thoroughly to reveal whiter lines.
How to Deep Clean Grout in the Shower
When surface cleaning isn’t enough, you need heavier artillery to remove deep-set mold and grime.
With Oxygen Bleach
Oxygen bleach (like sodium percarbonate) uses oxygen bubbles to lift stains without the toxicity of chlorine bleach.
Mix three tablespoons of powdered oxygen bleach into a bucket with two gallons of warm water. Use a sponge to saturate the grout lines completely. Let it sit for 15 minutes so the oxygen can do the work, then rinse clean.
With Commercial Cleaner
Sometimes you need a dedicated product. Look for alkaline-based grout cleaners, as they neutralize acids and grease better than standard soaps.
Read the label carefully. Many commercial cleaners are concentrated and require dilution. Always wear gloves and ensure the room is ventilated.
With Steam
Steam cleaning is the most effective chemical-free method. The high heat kills bacteria and blasts dirt out of the pores.
Start by sweeping or vacuuming the area to remove loose debris. Dirt and hair can clog the steamer brush.
Attach a small nylon or brass brush to the steam lance. Apply steam directly to the grout line while scrubbing gently. Work in small sections.
Wipe up the dirty water immediately with a microfiber cloth or mop. If you let it dry, the dirty water will just settle back into the grout pores.
With Chlorine Bleach
Safety Note
Chlorine bleach creates toxic fumes. Open windows, turn on the fan, and wear old clothes. Never mix bleach with vinegar or ammonia.
Use this as a last resort for white grout only. Dip a brush into diluted chlorine bleach and scrub the stained areas. Rinse immediately and thoroughly to prevent the bleach from degrading the grout structure over time.
With Grout Pen or Renewal
If cleaning fails, you might need to recolor. Grout pens or renewal paints sit on top of the existing grout to mask permanent stains.
Clean and dry the area completely before application. Trace the grout lines with the pen carefully. This is a cosmetic fix that makes old grout look brand new instantly.
Grout Maintenance Tips
Preventing buildup is easier than scrubbing it off later. Follow these habits to keep grout fresh:
- Squeegee daily: Remove water from walls after every shower to prevent mineral deposits and mold.
- Ventilate: Run the bathroom fan for 20 minutes after showering to reduce humidity.
- Seal regularly: Apply a grout sealer once a year to create a barrier against water and stains.
- Weekly wash: Spray a mild cleaner and wipe down tiles once a week to catch surface dirt.
When to Replace Shower Grout
Grout usually lasts 15 to 20 years, but water damage can shorten its lifespan. Cleaning can’t fix structural failure.
Watch for these two signs that you need to re-grout tile grouting:
- Crumbling texture: Press your fingernail into the grout. If it feels soft or powder falls out, the structure is compromised.
- Recurring mold: If mold keeps returning in the same spot immediately after cleaning, it may be growing behind the tile.
FAQs
Here are common questions about keeping your shower lines bright and clean.
What are the Different Types of Grout?
The three main types are sanded grout (for wide joints), unsanded grout (for thin joints), and epoxy grout (waterproof and stain-resistant).
How Do Professionals Clean Shower Grout?
Professionals typically use high-pressure steam cleaning or industrial-strength alkaline cleaners to extract deep-seated dirt without damaging the tile.
Does Oxiclean Work on Grout?
Yes. OxiClean is an oxygen bleach cleaner that safely lifts stains from grout without the harsh corrosive effects of chlorine bleach.
Can You Use Steel Wool On Grout?
No. Steel wool is too abrasive and will leave small metal particles behind that rust and stain the grout.
Pro Tip
Stick to nylon brushes or old toothbrushes to avoid scratching the tile sealant or the grout itself.
Why Is My Grout Turning Orange?
Orange or pink discoloration is usually caused by a bacteria called Serratia marcescens, which feeds on fatty deposits in soap and shampoo residue.
In the End
Cleaning grout takes a little elbow grease, but the results are worth it. Start with mild homemade pastes like baking soda and peroxide before moving to heavy-duty steam or commercial cleaners. Remember to seal your grout annually to lock out moisture and keep your bathroom looking fresh for years to come.
