then rinse off.
Hydrogen peroxide
A product typically found in first-aid kits, but also highly useful for cleaning, disinfecting, and whitening grout.
Sprinkle a little baking soda onto the floor grout.
Add a small amount of hydrogen peroxide and a little liquid dish soap.
Let it sit for 5 minutes, then scrub thoroughly with a toothbrush and rinse off.
White vinegar
White vinegar has countless uses. In addition to thoroughly cleaning grout, it is also effective against limescale and mold.
Pour vinegar onto the grout.
Add some baking soda. Scrub thoroughly with a toothbrush and then rinse.
