The answer to 'upholstery stained' is that common causes include spills, dirt, and normal wear and tear. Symptoms can include visible discoloration, stains, or a dingy appearance. Solutions may involve spot cleaning, deep cleaning, or professional upholstery cleaning depending on the severity of the stain and the type of upholstery material.
For minor stains, you may be able to DIY clean the upholstery using a mild soap and water or a specialized upholstery cleaner. However, for more stubborn stains or delicate fabrics, it's best to call in a professional upholstery cleaning service to ensure the fabric is properly treated and not damaged during the cleaning process.