It seems that there is a lot of discrepancy in the power washing business as to the chemicals used and application of them. I can only assume that there are some that offer advice on chemicals that are not qualified to offer good advice. Either a chemical or combination of chemicals work or they don’t. I have seen on forum posts where multiple people say that they use a product and that it is the best for a job and that they have tried other products that do not work well or at all. Then I see on other forum posts the opposite opinions on the same products. Does not make sense to me. I will simply have to try multiple products and see with my own eyes as to what products to use.
Ronald Reagan once said, “Trust but verify”