Things You'll Need
Plastic spary bottle filled with water
OxiClean is an alkaline-based cleaning product that reacts with oxygen to dissolve dirt and grime. When formed into a paste, OxiClean can be applied to floor grout (the grooves in between the tiles) to remove compacted dirt, mold, mildew and grime. The manufacturer recommends applying the product to the problem areas and letting it set overnight for best results. An old toothbrush is useful for scrubbing deep into the grout for a good cleaning.
Add one scoop of powdered OxiClean to a metal bowl (the scoop is inside the product package) and add water a few drops at a time to form a paste.
Apply to the paste to all areas of the grout and let the OxiClean work overnight for best results.
Spray a light mist of water on the grout with the plastic spray bottle and scrub the grout with an old toothbrush.
Wipe down the floor with clean paper towels.