How to Clean Grout and Restore Bathroom Tile

Dirty grout makes even new tile look old and grimy. Replacing grout costs $500-2,000, but you can restore it to near-white condition for under $10 using household products. Here are the most effective methods.

Method 1: Baking Soda + Hydrogen Peroxide (Best Overall)

1. Mix 1/2 cup baking soda + 1/4 cup hydrogen peroxide + 1 tsp dish soap into a paste
2. Apply paste to grout lines with a small brush (old toothbrush works perfectly)
3. Let sit 10-15 minutes
4. Scrub vigorously with the brush
5. Rinse with warm water

Works on: 80% of grout stains. Safe for all tile types. Cost: under $5.

Method 2: Oxygen Bleach (For Tough Stains)

1. Mix OxiClean or oxygen bleach powder with warm water (follow package directions)
2. Apply to grout and let sit 15-30 minutes
3. Scrub with stiff brush
4. Rinse thoroughly

Works on: Mold, mildew, deep-set stains. More powerful than chlorine bleach without the harsh fumes.

Method 3: Steam Cleaning (No Chemicals)

A handheld steam cleaner ($30-60) blasts dirt out of grout with high-temperature steam. No chemicals needed " — just water vapor. Particularly effective for mold and mildew in shower grout.

Method 4: Grout Pen (Instant Whitening)

After cleaning, a grout pen ($8-12) paints over remaining discoloration. It's essentially a paint marker for grout lines. Provides instant visible improvement even if deep stains remain.

Preventing Dirty Grout

• Seal the grout: Apply grout sealer every 1-2 years. It prevents stains from penetrating and makes cleaning easier. ($10-15 for a bottle that covers 100+ sq ft.)
• Squeegee after every shower: Removes water and soap before it settles into grout
• Ventilate: Run the bathroom fan during and 30 minutes after showers to reduce moisture
• Clean weekly: Quick spray of daily shower cleaner prevents buildup