How to clean floor tile grout?
One of the most helpful grout cleaning tips involves using an ingredient that can be found in almost everyone’s home: baking soda. Baking soda is a great way to clean grout, because it both cleans and deodorizes the grout as well as shining the tile. Pour water on the grout, and then sprinkle baking soda over the area. Let the baking soda sit for a few minutes so it has time to work its magic. Use an old toothbrush or a grout brush to scrub the area, and then rinse with a wet sponge. Baking soda is completely non-toxic.
Use a mop or rag to remove the solution, rinse the tiles with clean water, then repeat as needed until the grout is as clean as new.
The easiest way to clean floor tile grout is with some old fashioned elbow grease. You can purchase tile grout cleaners at your local tile or hardware store and can also purchase a tile grout cleaning brush that is a very stiff brush. You should apply the cleaner and scrub with the brush. You can then follow up by wiping with a clean damp cloth. It would be a good idea to go ahead and seal the grout again when you are finished.