In addition to keeping your awnings looking sharp and new, keeping your awnings clean is the number one way to extend their life. You should clean your awnings at least once a year, however commercial awnings in high traffic areas may need to be cleaned more often.
For any type of awning, simply brushing loose dirt from the surface will go a long way toward extending its life and making it last. Once loose bits of dirt have been removed you can do a deeper cleaning by using dishwashing liquid and water along with a soft brush. Sunbrella's care and cleaning page has tips for different kinds of stains and different cleaning options for different types of stains.
If your awning is in need of a deeper cleaning, you may want to consider our Awning Cleaning Service.