Clean the haze with a damp tile sponge. Dip a large yellow tile sponge in a bucket of water and wring it out. Scrub the tile in a single direction, rather than moving back and forth or cleaning in a circular motion. Rinse and wring the sponge frequently, and change out the water in the bucket when it gets dirty. Use grout haze remover if water doesn’t work. Pick up grout haze remover from your local hardware store or wood tile supply store. Put the remover on a clean cloth or rag, and wipe the tiles with it.
Mop the floor with vinegar and water as an alternative to haze remover. Mix 1 cup (240 mL) of distilled vinegar with 1 quart (0.946 L) of warm water. Mop the floor with this solution. Use a scrub brush on stubborn areas. Don’t rinse the vinegar solution off the floor. Allow it to dry completely before sealing. Don’t use vinegar on marble, travertine, or granite.
Remove hardened grout from your wood marble tile with sugar. Stir white sugar in warm water in a ratio of 1 part sugar to 10 parts warm water. Sponge this mixture into the hardened grout. Leave it alone for an hour, then scrape the grout off your tile. Keep applying sugar water as needed while you scrape to keep the tile moist.
Adjust the ratio of sugar to warm water until you have an effective mixture. Alternatively, you can apply undiluted vinegar to hardened grout to make it easier to scrape the grout off of your wall tile. Once the grout is removed, rinse the entire area thoroughly with plain water to remove all of the vinegar.
Sand it lightly if all else fails. Use a dry scrubbing sponge or cheesecloth to rub down the tile. Rub the only tile until the haze is removed. After you lightly sand the grout off of the small tile with the cheesecloth or sponge, vacuum up all of the dust before sealing. Try this method on grout that has not set for long. Don’t wet the sponge or cheesecloth or the dust from the grout will stick to the floor again.
Avoid using commercial detergents. Though you may be tempted to spray a commercial cleaning product on the tile to remove grout haze, this could actually make the problem worse. Not only can it create additional haze, it may discolor the grout between the mould wall tiles.