To clean stubborn soap scum from shower tile, make a baking soda paste, apply the paste to the shower tiles, allow the paste to sit for a few minutes, scrub the tiles with a brush, and rinse the area thoroughly. If necessary, repeat the process.
- Make a paste of vinegar and baking soda
Gather 1 and 2/3 cups of baking soda, one-half cup of liquid soap, one-half cup of water and two tablespoons of white vinegar. Mix the baking soda and soap together. Then add the water, and stir until the lumps are gone. Finally, add the vinegar, and mix again.
- Apply the paste to the shower tile
Squirt the paste onto the soap scum from a squeeze bottle, or dip a cloth into the paste and apply liberally to the shower tile.
- Give the paste time to work
Allow time for the cleanser to work. Check to make sure it doesn't slide down the side of the shower. If the paste slides, reapply the paste.
- Scrub the tile
Scrub the soap-scum-coated tiles using a soft-bristled brush or a good cleaning cloth.
- Rinse the cleanser off the tiles
Direct the shower head toward the tiles, and turn on the water to remove the cleanser. If desired, use a bucket of water instead.
- Repeat if necessary
If the soap scum is still there, repeat the process, but allow the paste to sit for a longer time. Thicken the paste with additional baking soda, if necessary, to keep it on the shower tiles.