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I did a driveway today , It turned out great. I am waiting for it to dry for a after pic. This is the before.
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Yes that's what it was from, it turned out great.That looks like iron from a well runoff. If this is the case, then that's great because we have a lot of wells in our area.


example: I have been a contractor for 28 years and i have never seen a product that worked so easy. It was very simple we followed the factory instructions given by craig harrison, he makes this so simple to remove rust and other fertilizer stains. This is going to be a huge asset to my business and my customers in the future and i never realized the possibilities until now. Its a niche in the market that needs filled and i stand ready grow as f-9 grows to become the best expert removal person in the business.
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HVAC vent stains on cementboard siding at a hotel. It worked great!