Ceramic tile adds a great look to a home, whether it is used as a floor tile, on a back splash, or in a bathroom shower. Ceramic tile is often used in a part of the home where it is exposed to water and the result can be occasional staining from rust. The beauty and glossy finish of ceramic tile can make a homeowner pause before attempting to clean it, wanting to be careful not to damage the tile. If you have ceramic tile with rust marks, you can get them off with some safe cleaning techniques.
Apply lemon juice directly to the rust mark and allow it to sit and work for 30 minutes. Scrub with a soft sponge or plastic scrubby, and then rinse. Repeat several times if necessary.
Use white vinegar on those rust marks that don't come off using lemon juice. Apply in the same manner, letting it soak the rust for about 30 minutes before scrubbing and rinsing.
Put on rubber gloves and prepare a solution of two tablespoons oxalic acid in a quart of hot water for the most difficult rust marks on your tile. Apply it with a sponge and use a stiff bristled nylon brush to scrub off the mark. Carefully rinse the tile to finish the job.