If you have previously used another chemical cleaner on the floor, rinse the surface thoroughly before trying a different product.
Removing the black residue is only part of the solution—the way grout is maintained afterward can determine how quickly the discoloration returns.
How to Keep Grout Cleaner for Longer
Once the grout has been cleaned, a few simple habits can slow down the return of dark stains.
Clean Spills Quickly
Oil, sauces, beverages, muddy water, and other spills can penetrate porous grout if they remain on
the floor for too long. Wiping spills promptly helps prevent them from becoming deeply embedded stains.
Vacuum or Sweep Before Mopping
Mopping a dusty floor can push wet dirt directly into grout lines. Remove loose dust, hair, crumbs, and debris first with a vacuum cleaner or broom, then mop the floor.
Change Dirty Mop Water
When mop water becomes visibly dirty, continuing to use it may redistribute grime across the floor and into grout lines. Replacing the water during cleaning can make a noticeable difference, particularly on large or heavily
