If there has been smoke near your tiles, you may want to clean soot from them. The following is the best way to remove soot from tiles.
Step 1 - Setting Up
As you will be working with ammonia, you should open all of your doors and windows to ventilate the area around your tiles, and put on your rubber gloves and eye protection. Gather your materials and bring them to the section of tile that has been dirtied by soot. Once you are ready to start making your cleaning mixture, place 1 gallon of water into your bucket. Next, mix in 1 cup of ammonia, 1/4 cup of baking soda, and 1/2 cup of white vinegar.
Step 2 - Brushing the Tiles
Tiles, unfortunately, are easy to damage. If you use an abrasive brush to scrub them, or scrub them too hard, they will scratch. This is why it is important to use a soft brush and scrub gently. Dip your soft brush into your bucket of cleaning mixture. Spread the mixture onto your tiles gently, using a circular motion to rub it in. Cover the entire area of effected tile with this technique.
Step 3 - Rinsing the Tiles
Use a second bucket full of water and a mop to rinse the tiles and remove the cleaning mixture.