What's the best way to clean grout?

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Put vinegar and warm water into a spray bottle, shake gently, spray your grout and let stand for 5 minutes before scrubbing. I like to use an old toothbrush. Then rinse. Hope that helps!

To clean dark colored grout lines on tile floors: ***** Mix baking soda and white vinegar in a cup to a paste like consistency. Use a small brush to apply the mixture to the grout lines. Allow the mixture to remain on the grout lines for a little while. Use a small scrub brush or an old toothbrush to scrub the grout lines. Clean the floor with water to remove the baking soda and vinegar solution. ***** To clean white or light colored grout lines on tile floors: ***** Sprinkle dry oxygen bleach on the grout lines. Spray the bleach with water in a spray bottle to wet it down. Allow the oxygen bleach to remain on the grout lines for a few minutes. Scrub the grout lines with a small scrub brush or old toothbrush. Clean the floor with water to remove the oxygen bleach. *****

There are numerous ways to keep your grout neat and clean; however, many cleaning products are loaded with harsh toxic chemicals. Green cleaning products are safer for both your employees and environment.Good sharing.