A cleaning solution that is safe to use over and over on tile and grout-- Combine ½ cup baking soda, cup vinegar, ¼ cup ammonia and 7 cups of water. Spray onto grout and let it work. Brush if very dirty, otherwise wipe off.
Condo Blues: How to Remove Grout and Regrout Tile >>>> The grout in the Master bathroom shower is chipping. The other grout patches I did as a quick fix are discoloring. I’ve been putting this job off forever.