Here is an example of cleaning white grout in a subdivision in the N.Tampa – Lutz area.
As a side note you’ll see how white and bright the grout came out. We ended doing the next door neighbor’s house the following week. What’s interesting was that we noticed how easy it was to clean the tile and grout in the pictures below. The 2nd neighboring home required additional time and effort to get a similar result.
The big difference? *SEALING* the grout when it was first installed.
The homeowners in the first home (pictured) had sealed there grout shortly after moving in. Even though the floor still became soiled over time the dirt and deposits were only allowed to reach the top layer and there was minimal if any staining.