The answer to 'carpet grimy' is that a grimy or dirty carpet can be caused by a variety of factors, including heavy foot traffic, spills, pet accidents, and general buildup of dirt and debris. Symptoms of a grimy carpet include a dull, discolored appearance, a noticeable odor, and a rough or matted texture.
For minor grittiness or light soiling, you may be able to address the problem with DIY carpet cleaning methods like vacuuming, spot cleaning, or using a rental carpet cleaner. However, for more extensive or deeply embedded grime, it's best to call in a professional carpet cleaning service. They have the specialized equipment, cleaning solutions, and expertise to thoroughly clean and restore your carpets.