S. Corridon 

I have a TimberTech deck that is about 3 years old. The deck started to develop black mold/mildew spots which I could not get out with any of the cleaners I used. Corte Clean saved the day! After following the instructions carefully, 95% of the mold has disappeared. I applied 2-3 applications on the deck as I had never cleaned the deck before, but I think this product is great! Highly recommended. (NOTE FROM CORTE LLC: Customer likely needed to do an additional application or two at MAXIMUM STRENGTH to thoroughly remove all mold stains due to the three years of neglect, making sure the composite thoroughly dried before applications.)