One of the biggest advantages of porcelain tile is that it’s one of the easiest of flooring materials to clean. To keep it looking tidy, your tile floor can be easily swept or vacuumed twice a week, and then cleaned with a damp sponge mop and a solution of 1/4 cup of white vinegar to 2 gallons of water.
Although porcelain tile is by definition impervious (having an absorption rate of .5% or less), it is still possible for its surface to stain. You may choose a cleaner specifically formulated for porcelain tile. However, unglazed surfaces sometimes assume the color of the cleaning solution and hat is where vinegar comes in useful.