Tile may look and feel impervious to harm, but don't take chances. Test your stain-removal technique on an inconspicuous spot of both tile and grout before cleaning. A nonabrasive all-purpose cleaner or a tub-tile-sink product removes most stains. Try the following techniques for specific stains.
Blood: Dab the stain with hydrogen peroxide or diluted bleach.
Coffee, tea, or juice: Wash the stain with detergent and hot water, then blot with hydrogen peroxide or diluted bleach.
Gum, wax, or tar: Place ice cubes in a resealable plastic bag and lay the bag over the material you want to remove from the tile. Once the material solidifies, remove as much of it as possible with a crafts stick. Remove any remaining residue with nonflammable paint thinner.
Grease or fat-base stains: Wash the stain with club soda and water or with a nonabrasive floor cleaner.
Ink or dye: Soak a clean cloth with diluted bleach and lay it over the stain. Let the cloth stay in place until the stain disappears. Rinse well.
Iodine: Scrub the iodine stain with diluted ammonia and rinse well.
Nail polish: Dissolve the nail polish stain with nail polish remover. If the stain remains, dab it with hydrogen peroxide or diluted bleach.