One of the benefits of microfiber cleaning is that it lasts a long time. Many microfiber towels can wash up to 500 items of clothing. That's up to two years in a typical car wash. Unfortunately, they don't last forever; At some point, cleaning with a microfiber cloth is no longer as revitalizing as it used to be. You'll know it's time to say goodbye to your current cloth when it no longer cleans or collects dust like it used to.