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- 1). Mix 1/2 cup baking soda with 1/3 cup ammonia and 1/4 cup white vinegar. Mix until the baking soda has completely dissolved.
- 2). Pour 7 cups of water into the cleaning solution to dilute it.
- 3). Pour the diluted solution into a spray bottle.
- 4). Spray the talcum powder-covered grout until it is completely soaked.
- 5). Immediately wipe up the solution with a clean cloth. Do not use paper towels, as pieces of the paper will stick to the grout's rough surface.
- 6). Let the tile air dry completely.
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