Grease stains accumulate around many areas of the kitchen, including grout that outlines wall or floor tile. The grease is difficult to remove and leaves behind a dark layer of film that dulls the appearance of tiled and grouted surfaces. To get the grease off, you'll need to use something that breaks up the residue without causing damage to your grouted surface.
Run a toothbrush under tap water and cover the bristles of the toothbrush with dish soap.
Scrub the soapy brush over the grease stains, applying fresh dish soap to the brush as needed until all grease is lifted out of the tile.
Wipe the grout with a wet cleaning rag.
Let the grout fully dry and examine to see if any grease residue is still present. It is sometimes hard to tell when the grout is still wet since the water darkens the grout colour. Repeat the cleaning process if any grease residue remains.