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In desperation, I must admit that I have tried a couple of other products to clean my heavily mold stained, neglected, Correct Deck: ZEP Deck and Fence Wash, Concrobium XT Eco Wash and Oxy-Clean. None work as well as Corte Clean. In my opinion Corte Clean is not magically effortless (and never claimed to be) but it is the best cleaner available. B. McGregor, Mississauga, Ontario, Canada