Cleaning ceramic tile

For glazed tiles, mop with a mix of one capful of isopropyl alcohol in one gallon of water. For unglazed tile, like terra-cotta, mop with water and a few drops of dishwashing liquid. Rinse with water and a clean mop (or cloth). Avoid oil soaps or ammonia, which will yellow grout. Avoid vinegar, which will damage grout. For tough stains, use a scraper or putty knife to remove stubborn debris. Use a nylon scrubbing pad dampened with dishwashing liquid to remove stains from grout. Apply grout sealer twice a year to prevent stains.