One of my clients has a challenge for me to clean a yellow orange stain on his front pathway. He said if i can clean his pathway i can pressure wash his other entire home (mansion). I went there and tried a slew of chemicals and pressure including bleach, vinegar, tsp, (all by the advice of people on here) and nothing worked. I did some research and oxylic acid looked like it would do the trick. I ordered it and told him i would go out today but he told me he tried it already and it didnt work. Im really looking for new ideas or solutions because id love to get this done
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Best idea I can give you- post a picture of the stain!
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need pics, we’re shooting blind here
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Muratic acid, do the entire square with it to make it more uniform. It will etch the concrete so don’t leave it on long. 10-15 seconds.
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Well as soon as you get done spraying it on, rinse it off. Pump up
