I solved grout staining problems with a product called groutshields. It is an acrylic based colorized sealer. We've used it for years and have been pleased....would not have tile without it. I even use it on new tile installs.
You can find it online right from the company....just type in the www and the name.....
I found it did not work as well with the little 1" tiles, but with any normal larger tiles, etc it has worked great.
Disclaimer- I have no personal stake in this product or company...I just like passing info along when something works for me.
Frank
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The Plantation in Leesburg, just south of you good people. Love being a Floridian!
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