We have an expensive large Fiberon Horizon PVC coated deck we installed approximately a decade ago here in Kentucky. It's actually 3 decks, on 3 levels, with stairs handrails, balusters, etc., around 400 square feet total. It is the textured decking that looks like wood with deep grooves that traps dirt and derbies. It gets real dirty and difficult to clean. I tried another product, but it excessively bleached and permanently damaged the deck! I can still see where I used it today, which makes me mad. I called the manufacturer, Fiberon, and they recommended Corte Clean. It is awesome! It is easy to use. You can see it work. We have been using it ever year since we found out about it. I use to buy it locally but now buy it directly form the website. I don't mind this, as it is fresher & works better. As long as we own this deck, and live in this house, we will be using Corte Clean to keep our deck clean. God bless you.