Things You'll Need
1/4 cup baking soda
Marble is a durable stone under most circumstances, but it does require some special care. Because marble is porous, you should clean spills immediately or you run the risk of the stone developing stains. Marble tile is just as susceptible to staining as solid marble, but you can use the same method to remove stains from marble tile as you would solid stone. Poultices are particularly effective for removing stains from stone surfaces because they draw the stain out of the stone as they dry.
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Add enough water to 1/4 cup baking soda to make a paste the consistency of peanut butter. If you add too much water, just add a little more baking soda until you get the right thickness.
Spread the baking soda paste in a thick layer on top of the stained marble tile. You only need to cover just past the actual stain. The paste should be about 1/4 to 1/2 inch thick.
Apply plastic wrap over the top of the baking soda paste. Make sure you have at least an inch of extra plastic around each side.
Tape the edges of the plastic to the marble tile.
Use a toothpick to poke a few small holes in the plastic wrap. This gives the baking soda paste just enough air to dry.
Leave the baking soda paste in place to dry. Depending on the size of the poultice, it should take 24 to 48 hours for the baking soda to dry.
Remove the plastic wrap and check the baking soda paste. If the paste is still wet, reapply the plastic wrap and let the poultice dry longer. If the paste is dry, brush it away and check to see if the stain is gone. If the stain is still there, reapply fresh baking soda paste.
Do not use bleach or acidic cleansers on marble tile as it will damage the stone. Do not use abrasive cleansers or steel wool as it will scratch the marble tile.