Corte Clean Composite Deck Cleaner is the best product we have found to keep our deck looking as close to new as possible. We have had this deck since 2010 (uncapped version), and when it is cleaned with Corte Clean, it looks great. We are Seniors and are still cleaning it ourselves--mostly my husband, but I have done it a time or two in his absence. To quote him, "Cleaning a deck is never easy, but CorteClean makes it rewarding." Reading and following directions are also important to get the best result. Customer service has always been helpful and courteous. Their delivery has been reliable all the years we have used this product. Not sure if photo actually attached, but if it did, you can see the results of cleaning with Corte Clean on the boards on the right. Those spots on the boards on the left are after being wetted down, and before cleaner is applied. Amazing results!