Like many of you I tried tons of products to clean the cladding. I never liked the look of the cladding shiney or glossy and was getting frustrated. But..........I did find, much by accident, the perfect cleaner. Windex "multi-surface". You will have to do it many times to remove all the oily products that were used before but once its all cleaned off the Windex works perfect, dosnt streak and leaves the cladding a nice dark grey flat color.