The answer to 'carpet discolored' is that there are several common causes, including spills, sun damage, pet stains, and improper cleaning. Discoloration can range from faded or bleached-out areas to dark stains or yellowing. The solution depends on the cause, but may involve spot cleaning, deep cleaning, or even professional carpet dyeing or replacement.
If the discoloration is localized and the result of a recent spill or stain, you may be able to address it with DIY spot cleaning using the right cleaning solution and technique. However, if the discoloration is widespread or the result of long-term issues like sun damage or pet accidents, it's best to call in a professional carpet cleaning service. They have the tools and expertise to safely and effectively clean and restore your carpets.