Tile grout should be cleaned whenever it becomes dirty or discolored from mold and mildew, but the frequency will depend on the location of the tile and how heavily the surface is used. Tiled wall surfaces rarely require it, while tiled shower walls subject to high humidity and constantly wet conditions may require it on a weekly basis. The best rule of thumb: Scrub tile grout whenever it's obviously discolored or dirty.
*What do you need:
It is best to try grout cleaners in order of hardness, starting with an alkaline cleaner, then progressing to oxygen bleach, then bleach, if necessary.
°Provisions
°grout brush
°Bleach
°Oxygen bleach
°Alkaline cleaner
°Protective glasses
°rubber gloves
°Napkin
* How to clean tile grout with an alkaline cleaner
The Tile Council of Europe (TCA) recommends alkaline cleaners to remove grout stains. Alkaline cleaners include Spic n' span, Super Washing Soda, and Mr. Clean, among others. These cleaners are especially good for cleaning dirty and greasy grout joints in the kitchen.
Mix the cleanser
Mix the cleaner with water as directed on the package label. Do not exceed the recommended amount of cleaner, as this will not improve the cleaning power of the solution.
Apply cleanser
Apply the cleaning solution liberally to the grout lines using a sponge. Let the solution sit for a few minutes.
Scrub grout lines
Use the grout brush to vigorously scrub the grout lines, until the stains are gone. You will notice that the grout's original color returns as you scrub.
Clean the solution
Sponge up excess cleaning solution, then apply cool water. Sponge up the water to complete the rinse.
Dry the surface
Use a towel to completely dry the tile. Allow the tile to air dry overnight before resealing the grout.
The grout is now clean. Be sure to seal the grout well before using the surface again.
