The Tilex Tile & Grout Pen and Hoover 2X FloorMate Tile & Grout Plus Hard Floor Cleaning Solution are good grout cleaners, according to Best Grout Cleaner. DuPont StoneTech KA4-1G KlenzAll is another highly rated grout cleaning product.
The Tilex Tile & Grout Pen is a lightweight grout cleaning product. Its small point reaches into narrow crevices to deliver targeted treatment. The Tilex Tile & Grout Pen also kills mold and mildew.
Hoover 2X FloorMate Tile & Grout Plus Hard Floor Cleaning Solution is safe for granite, marble, tile and grout. This product is non-toxic and biodegradable and does not deposit a dulling film.