Baking Soda Grout Cleaner / How to Speed Clean Your Kitchen & Keep it Clean, Organized : To whiten grubby grout lines, spray with hydrogen peroxide, let it sit a bit, and then come back and sprinkle with baking soda.

Baking Soda Grout Cleaner / How to Speed Clean Your Kitchen & Keep it Clean, Organized : To whiten grubby grout lines, spray with h...