We recently installed concrete pavers and our golf cart left several large rust stains. We tried a couple of other products that did nothing. Just received this and it worked immediately. It doesn't smell great but who cares because it really works well!

My 2007 F-150 was starting to rust under the frame leaving stains on the driveway. Our Homeowners Associated mailed a letter warning me to fix it! I mixed the product with water as directed in a small storage bin that could easily hold a gallon. I wore a face mask (courtesy of COVID), gloves, old clothes, and rubber boots. I used a paint roller to apply it to my concrete driveway. I waited 10 minutes. Then I used a steel bristle brush to help remove the stains. Then I power-washed everything. I sent photos to the HOA. Their response was "Wow!" I was very pleased with this product. I threw away the roller and excess product.

This stuff is amazing! It removed rust spots and fertilizer stains almost instantly from my driveway and paver walkway. Only caution would be it will kill your grass, and bleach your clothes!

Stuff works amazing tho!

The reviews are true, man. This stuff works! It's like an alien goo monster that eats up all rust in its path with impunity. I recently rented a dumpster to throw some stuff away, and it was placed on my driveway. When they hauled it away, I noticed it had left a huge area of rust stains that made my driveway look awful. Nothing else I tried would get out these stains. Then I stumbled upon this stuff. It indeed smells like the pits of hell (I'd recommend wearing some type of breathing apparatus), but it does a great job getting rid of rust stains. It did such a good job that it made the untouched areas of my driveway look dirty by comparison. It even got rid of a 15-YEAR OLD rust stain I saw when I first bought this house. So I guess be mindful of how much you need to dilute it. I'm going to get some more just to even up the driveway color some more. I highly recommend this toxic goo.

I tried lots of highly rated products that promised to remove iron stains from concrete. I had a concrete paver patio with rust stains leaked from the patio furniture. This was the only product that worked. And it worked completely. Iron stains are gone and my patio looks great again. It was easy to use--dump the powder in a gallon of water, mix thoroughly, spread., walk away for 15 min. I think I left it on for 30 minutes. Anyway, I hosed it off into the grass and the patio was clean. I will be sealing the patio next to keep this from happening again.