We have a 40 year old house and there have been 5 kids through the bathrooms. The tile and grout needed cleaning and we tried Tilex and any thing else that we heard about. Nothing lived up to our hopes. EdFred Shower and Tile cleaner WORKED. We applied and waited a minute or 2 and wiped it up. No scrubbing. The grout looks as good as orignial. It meets my wife's standards and she is strict about the appearance. saved me a new grout job.