Clean the mess up immediately. Stone will soak up spills quickly because it is porous. The stains will be harder to remove the longer they are left. To prevent this, use a towel or other absorbent object to blot up the spill. Then, clean the spot thoroughly.
Use ammonia and water. This works well to remove stains caused by organic items, like coffee, food, leaves, and lichen. Mix a small amount of ammonia with water. Scrub with a sponge or soft cloth until the stain lifts. Then, dry the area with a clean towel. Bleach can also be used, but it is not as good as ammonia because it is more corrosive.
Remove rust with lemon juice and salt. Rust occurs when metal oxidizes during contact with stone. The rust stains can be lifted with lemon juice and salt. Pour some lemon juice and salt onto a clean cloth. Scrub with the cloth until the rust is gone. Immediately rinse the surface with water. Lemon is acidic, so it should be removed as soon you’re done using it. Rinse with a lot of water and dry with a towel.
Get rid of paint and ink stains. Paints and inks are more difficult to use because the cleaners for them are typically harsh. You can use mineral alcohol and a cloth to scrub off the stain. Methylene chloride can also be used, but it is dangerous. Clean up fats with talcum powder. Fats from things like barbecues and candles can stain stone tile. Talcum powder can be used to remove the stains. Pour a fair amount of talcum powder on the stain and leave it for several days. Repeat the process again if the stain does not lift.
Clean the surface. Wipe all grout residue off of the tile using the damp tile sponge in a diagonal motion. Clean the excess grout from the expansion areas using the margin trowel to leave those areas completely clean for caulking. Rinse and repeat. Rinse tile sponge and repeat the previous step until all of the grout residue is removed and wood tile is completely clean of grout haze. Make sure to wring out as much water as possible each time you rinse the sponge.