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Diluted dishwasher detergent can help neutralize bleach stains on fabric, upholstery, and carpet. Different materials will require different water temperatures in order to be effective. For fabric and upholstery, mix 1 tablespoon (15mL) of liquid dishwasher detergent with 2 cups (470mL) of cool water. For carpet, mix 1 tablespoon (15mL) of liquid dishwasher detergent with 2 cups (470mL) of warm water. Warm water is typically preferred over cold water to treat or clean carpets as it is more effective in lifting dirt and liquid residues from the carpet fibers. Most professional carpet cleaners only use warm water to clean carpets. Work from the outside of the stain towards the center. You will have a better chance of reversing the less saturated areas away from the central point, so focus on the edges first. If you do not have a white cloth, use a colored cloth or cotton balls instead. Since you are lifting the bleach stain, it may stain whatever cloth you choose to use. You want to give the dishwasher detergent solution a chance to lift up the bleach stain. Just make sure the area is saturated with the solution before letting it soak. This will help remove any of the bleach residue that was lifted by the diluted dishwasher detergent. Continue to blot the area until it is dry, or until no more of the bleach is lifting from the treated area. Blot at the stain with more solution and rinse it with more clean water until the stain is less noticeable, or until you are satisfied with the results. The treated area of the carpet might be stiff or a bit matted once you are done cleaning it. Leave the carpet to dry overnight, and then run a vacuum over the carpet in the morning. To speed up the drying process, press paper towels into the carpet to absorb any excess liquid.
Mix liquid dishwasher detergent with water to treat the bleach stains. Dip a clean, white cloth into the solution, and blot at the bleach stain. Let the solution soak for 5 minutes. Use a clean cloth to blot the treated area with cold water. Vacuum the treated carpet once it is dry to restore the natural texture.