Grout eez is safe for both ceramic and porcelain tile and the only change it will make to the color of.
Best tile grout cleaner bathroom.
This professional strength formula is about as easy to use as it gets just spray it on wait 10 minutes then wipe away whatever dirt and grime is lurking in your grout.
When used regularly it can remove mold mildew soap scum and hard water deposits.
Its name says it all.
Grout cleaner should be gentle enough to polish tile without scratching it but strong enough to eliminate grout discoloration due to mold.
When it comes to grout cleaners this one from the floor guys gets top marks all around.