I have done some decks in the past, stripping neutralizing etc and have come out once but don't do a ton of them. I personally have a treated fir deck at home that has never been stained or sealed and is in need of a spruce up. I think some time ago I was told there is a certain cleaner that has stripper properties but isnt as harsh? Or is there something completely different for me. I don't think ill have to brighten after unless i use something really High PH to clean it with. What the best thing to use just to get off the greying etc.