Recommended methods and tips for cleaning your grout effectively:

Baking Soda and Hydrogen Peroxide
Mix into a paste and apply with a gentle scrub brush, then rinse.

Vinegar and water
Mix equal parts and apply in a spray bottle. Allow to sit 5-10 mins. Use a gentle brush to scrub, then rinse. 

Steam Cleaning
Direct steam into the grout lines, gentle scrub brush if needed, wipe clean

Optional sealer 
After cleaning, consider sealing the grout for protection and ease of cleaning. 

Atlanta Flooring Design Centers – Cleaning Division professionally cleans tile and grout for residential and commercial spaces. 

Christy Olguin