Using these floor liners is a breeze. First, take out the old floor mats from your 2009 - 2013 Subaru Forester XT. Then, place the new COBB x WeatherTech floor liners in the footwell area. Make sure they fit snugly, and use the retention system to keep them in place. When it comes to cleaning, if there's just a little dirt, you can use a damp cloth to wipe it off. For more stubborn messes, remove the floor liners and wash them with mild soap and water. Let them dry completely before putting them back in your car. Avoid using harsh chemicals or abrasive cleaners as they might damage the high - density material. Also, check the liners regularly to make sure the retention system is working properly and that there are no signs of wear and tear.