Scotchgard is a fluorochemical that protects your carpet and upholstery from both spills and dirt. It provides a protective coating on your carpets and upholstery like an invisible shield. Most people on realize the benefits of carpet protector in the case of spills.
The more important and often less advertised benefit of carpet protector is in the protection from dirt. Dirt is an abrasive. If you look at your carpet fibers under a microscope you will notice that any dirt lodged into the fibers is not very smooth and round. You will notice that dirt looks like tiny razorblades that tear into your carpet. Ever step that you take digs the dirt deeper into the carpet, further damaging the look and quality.
Although carpet protector does need to be reapplied every eighteen months, you can be rest assured that carpet protector plus a thorough, consistent vacuuming regimen will add years to the life and beauty of your carpets. This can save you hundreds to thousands of dollars over the lifetime of a carpet.