Gather these supplies before you begin:
- 1 cup Blue Dawn Ultra Dish Soap
- 1 cup white distilled vinegar
- 3% hydrogen peroxide
- 2 tablespoons baking soda
- Soft scrub brush
- Microfiber cloth
- Rubber gloves
- Spray bottle or bowl
- Warm water
Step 1: Prepare the Cleaning Solution
Mix together:
- 1 cup Dawn Ultra Dish Soap
- 1 cup white distilled vinegar
You can warm the vinegar slightly to help dissolve soap scum more effectively, but do not boil it.
Pour the mixture into a spray bottle or a bowl for easy application.
Step 2: Apply the Cleaner
Spray or spread the mixture generously onto:
- Moldy grout
- Shower corners
- Silicone caulk
- Tile surfaces with visible mold or soap buildup
Make sure the affected areas are completely coated.
Step 3: Let It Sit
Allow the solution to remain on the surface for 10–15 minutes.
This gives the cleaner time to loosen soap residue and surface mold.
Step 4: Add Baking Soda
For stubborn stains, sprinkle 2 tablespoons of baking soda directly over the damp surface.
The baking soda provides gentle scrubbing power without scratching most tile surfaces.
Step 5: Scrub Gently
Using a soft scrub brush, clean:
- Grout lines
- Silicone seals
- Tile corners
Use small circular motions and avoid scrubbing aggressively, especially on silicone caulk.
Step 6: Rinse Thoroughly
Rinse the entire area with warm water.
Be sure to remove all traces of the soap-and-vinegar mixture before moving on to the next step.
Step 7: Apply Hydrogen Peroxide
Spray 3% hydrogen peroxide directly onto any remaining mold stains.
Hydrogen peroxide can help lift discoloration and clean remaining surface mold.
Do not mix it into the previous cleaning solution.
Step 8: Let It Work
Allow the hydrogen peroxide to sit for 10 minutes.
This gives it time to act on any remaining stains.
Step 9: Wipe and Dry
Wipe the area clean using a damp microfiber cloth.
Then dry the shower corner thoroughly with a clean towel or allow it to air dry with good ventilation.
Keeping the area dry helps discourage mold from returning.
How to Prevent Mold from Coming Back
After each shower:
- Use a squeegee to remove water from the walls.
- Leave the shower door or curtain open.
- Run the bathroom exhaust fan for at least 20 minutes.
- Fix leaking faucets or showerheads promptly.
- Clean grout and corners regularly before mold has a chance to grow.
Safety Tips
For safe cleaning:
- Wear rubber gloves.
- Open a window or run the exhaust fan for good ventilation.
- Never mix bleach with vinegar or hydrogen peroxide.
- Never mix hydrogen peroxide directly into the vinegar-and-soap solution.
- Keep cleaning products out of reach of children and pets.
- Test the cleaning solution on a small, inconspicuous area before using it on delicate surfaces.
