SPER Rust Remover New & Improved Formula 3X Concentrate Rust Stain Remover for Concrete, Houses, Fences, Metal & More Professional Grade, Fast-Acting, No Scrubbing, Biodegradable

This is great. I sprayed it on the fence where the rust in the sprinkler water put the stains on it. I watched as it cleaned the rust and it took less than one minute. Then I sprayed the fence with water and the job was done. It took less than 30 minutes to do 150 ft of fence. And it didn't kill the grass beneath the fence where the SPER fell afterward.

Excellent job on my rust stains on my carport which is painted concrete. Not so much on the heavy rust on my neighbors unpainted concrete.

I use this a quick maintenance and restorer for my tools in my garage, sadly my garage is not climate controlled so the cast iron surface of things like table saws, band saws, lathes and such even with me trying to keep the surface sealed with rust preventative sometime rust pops pup... A quick spray with this or some on a towel and some elbow grease and the light surface rust is removed and the tool is back to working order...

Even though the product direction state a one time use, you see a the stated results. After several application because the first didn't work, the results were still not satisfactory. J.Perez

This product was not sealed and was leaking. We used it on old windows from the 1950s to try and remove rust. It did help a little, but not all that much. And was not worth the leaky mess of the container.

Is effective

Use This works very well at removing rust. I used on several tools that were heavily rusted and it removed all rust. I use a brush to help remove rust before and after applications. The results were great. I recommend finishing/sealing with light oil to prevent future rust. Tip Its best to work in small batches at a time and avoid keeping on too long. In some cases I did keep on too long and it did eat away significant amounts of metal. Value When comparing other options this was a significant value over other comparable products. Final thoughts This is a great rust remover I recommend.

This rust remover worked surprisingly well on my outdoor furniture. Although we only paid around $100 for our set, it's been holding up for 6 years and I'd love to give it a longer life. I followed the directions and sprayed it on, let it sit for a couple minutes, and the rust stains rinsed off easily without any scrubbing. I’ve used other products that required more effort, so this was a nice change. It didn’t damage the surfaces I used it on, which included concrete, metal tools, and vinyl siding. That was a big plus because I was worried it might be too harsh. The fact that it’s biodegradable also made me feel better about using it around plants and outdoor areas.