Grout is a seemingly minor facet of tiled floors, countertops, or showers, but when it gets dirty, you discover how important it is to the look of your room. Grout stained with ground-in dirt can affect the entire look of a kitchen, bathroom, or any tiled surface, so it’s important to know how to clean dirty grout, or how to choose stain-resistant, camouflaging grout in the first place.