IRON OUTLiquid Rust Stain Remover, Pre-mixed, Quickly Removes Rust Stains from Concrete, Vinyl and Other Outdoor Surfaces, No Scrubbing, Safe to Use, 1 Gallon

We live in Florida and the water stains everything and finding this has been greatest ever. I put in spray bottle and spray area and yellow stain is gone, no scrubbing needed !

Used on white vinyl fencing where the irrigation system had left rust stains. Did the job very well.

Iron OUT Liquid Rust Stain Remover, Pre-mixed, Quickly Removes Rust Stains from Concrete, Vinyl and Other Outdoor Surfaces, No Scrubbing, Safe to Use, 1 Gallon used to clean iron stans from well water

The product works great and we used it on a concrete patio and concrete sidewalk that had been rusted from the irrigation over many years.We used it by pouring it straight out of the bottle and also by putting it in a spray bottle. In our tests we found that the spray bottle worked but required 3-4 applications by spray bottle compared to pouring a healthy amount straight out of the container.When you pour it out of the container it allows a thicker layer of Iron Out to remain on the surface and act longer than just spraying. It also worked more evenly than spraying which often caused splotchy results.To do the entire sidewalk in front of our house (approx 40-50 feet) we'd probably need 3-4 containers.We also tried it on our vinyl siding where the irrigation was hitting the house and it worked really great from the spray bottle. Definitely recommend the product but make sure you are applying it in enough quantity on porous concrete surfaces.

It was absolutely worthless. I used a sprayer and saturated the rust stains on the driveway. I kept it wet, and after half an hour I scrubbed the heck out of it. I kept spraying the area for another 45 minutes. It may have removed 10% of the rust. Don't waste your money.

I have very hard water and everything gets rust stains. It is like an eraser. Works great. I buy it for my cleaning lady to use. She now uses it on other clients houses.

the smell is HORRIBLE!! but it does such good work!! use it in a well-ventilated place! not recommended in home.

I purchased this to remove rust stains from my side walk caused by Scott's max green. First, I have tried many other chemicals, and so far nothing worked very well or as advertised. This was a little better, but it too does not work as the bottle states. First there is no way this is going to remove any stain just by waiting for the stain to disappear, I tried that and what a waste of time, noting accomplished. I then tried it with a scrub brush, with much better results. It did not remove the stains entirely, about 50% remained, I think after two or three applications it may remove most of the stains, but I some of the stain will likely remain. One problem I had was when you scrub the area, this stuff foams up, and turns whitish, once it turns whitish you cannot see the stains below the iron out. When rinsing it off the stains are visible. I also notice that once the entire sidewalk was dry, it appears as if it was washed with bleach, yet some of the stains still remained. I would use this again as it does seem that it is the only thing I have found that works, albeit not as advertised, but it at least removed some of the stain.