Typically, grout, the filling between tiles, is white or light colored. Over time, grout will become dirty, dingy, stained and discolored. This is especially true with grout between kitchen tiles. Grout located in the kitchen has to deal with problems that grout in other rooms do not. Food spills and grease splatter can all become caked onto the grout. Fortunately, you can remove grease and grime from the grout and restore the look of your tile.
Use Bleach to Remove Grease and Clean Grout.
Equip yourself with a pair of rubber gloves.
Fill a 5-gallon bucket with 1 gallon of water. Add ¾ cup of bleach to the water.
Saturate a toothbrush in the mixture. Scrub the tile with the toothbrush. Allow the bleach-water mixture to sit on the grout for several minutes.
Wipe the grout clean with a damp cloth.
Use Vinegar, Ammonia and Baking Soda to Remove Grease and Clean Grout.
Pour 1/3 cup of ammonia, ½ cup of baking soda, ¼ cup of distilled white vinegar and 7 cups of water into a clean spray bottle.
Swish the spray bottle around to mix the contents thoroughly.
Spray the grout with the mixture. Scrub the grout with a sponge.
Wipe the tiles and grout clean with a damp cloth.
Use Vinegar to Remove Grease and Clean Grout
Pour undiluted distilled white vinegar into a clean spray bottle.
Spray the vinegar directly onto the grout and allow to sit for several minutes.
Scrub the grout with a toothbrush and reapply the distilled white vinegar. Continue scrubbing until all grease and stains are gone.
Wipe clean with a damp cloth.