Grout Shield Tile and Grout Deep Cleaner lifts dirt from deep within the pores of your grout. It's the ideal way to to clean your grout prior to applying our color seal. Its environmentally friendly. The ingredients are effective at removing dirt and grime from deep within your grout, but are gentle enough not to interfere with the finish of your tile. Just mix one ounce of our deep cleaner win 8 oz of warm water and brush into your grout. Let the mixture sit on your grout for a few minutes and wipe clean with a sponge.