The answer to 'grout filthy' is that filthy grout is a common problem in many homes, often caused by a buildup of dirt, grime, and mold. Symptoms include discolored, stained, or cracked grout that can make the entire tile surface look dirty and unappealing.
Some common causes of filthy grout include lack of regular cleaning, improper cleaning methods, high-traffic areas, and moisture buildup. The good news is that there are several solutions, ranging from DIY cleaning to professional grout restoration services. For minor cases, homeowners can try scrubbing the grout with a stiff-bristled brush and a grout cleaner. For more stubborn stains or larger areas, a professional deep cleaning or re-grouting may be necessary.