Have a 3 year old Trex "Enhance" deck about 15% of which was markedly affected by animals and leaves from the tree canopy overhead. The remainder of the deck, though no where near as bad, was still in need of a cleaning this spring. Purchased Corte Cleaner based on the reviews and followed directions on package and your website. Was amazed at how quickly the deck was cleaned. Your product performed as advertised. I have ordered enough for the rest of this year and next. I will not even look at a substitute. Apply at the stronger concentration and rinse the area repeatedly to avoid any residue. A good pump sprayer, long-handled brush (together with any other brushes to get in odd nooks) and pressure washer are all the major tools you will need. Both the lightly and more heavily stained areas now look alike. My neighbor even commented on how much the deck now appears brand new! Couldn't ask for an easier project. About 3 hours for a 1000 sq ft deck.