I'm disappointed. I had high hopes for this cleaner. I have some mildew on my pool deck and this seemed just perfect for the job. I followed the instructions on the bottle and mixed up a batch of higher concentrate suggested for tough stains. It tells you to apply the product and wait a few minutes for it to work, then lightly rinse it. The instructions tell you that you "may" need to scrub the area treated. Well, after a light rinse I saw no change. Then I applied a relatively diligent scrub with a push broom. The product then produced a dirty foam which I had hoped meant the mildew was coming up off of the concrete. I lightly sprayed again and did not see any appreciable difference. After four series of vigorous scrubbing with a push broom, I did a final rinse. The mildew is still there. It isn't quite as dark looking but it certainly isn't mildew free. I wish I would have thought to take before and after photos to show the relatively minor change in appearance. Actually I could take two photos and say they were before and after since the change was so miniscule that it would prove my point.
I have concluded that the product did not work for me. A power washer probably would make a major difference but then I would be hard pressed to determine if the results are due to the cleaning solution or the power washer. Maybe this works better with a power washer but with hand scrubbing it was a failure.
From the vendor
· Fast-Foaming action lifts dirt, and wipes out stains caused by moss, mold, mildew, and algae
· Safe to use around plants, lawns and fabrics
· Can be used with Power Washers
· Makes up to 10 Gallons - Covers 1,000 to 2,500 sq ft
· Chlorine bleach-free
If reviewing a product, it may have been received free of charge. That will NEVER have a bearing on my recommendations.