Porcelain tile is relatively maintenance free and requires little care beyond regular cleaning. Most cleaning can be done with a damp cloth and gentle nonacidic soap. The entire area should be cleaned and scrubbed with cleaner solution and the use of a cotton mop, cloth, sponge, or non-metallic brush. The entire area should be rinsed with clean water to remove any cleaning solution residue. Remember that you should sweep or vacuum floor areas prior to cleaning to remove any dust or debris. Routine cleaners should never contain hazardous or polluting products including, but not limited to acids or ammonia. Acids can damage the grout and the glazed surface of the tile, and ammonia can discolor the grout.