It seems I fell for the hype. I saw videos of people spraying a bit of this stuff on rusty parts, or soaking parts in it, and then literally wiping the rust away. Well I tried it and in my opinion, it doesn't work very well. The product is probably okay for light surface rust. I had a very rusty frame here and saturated it in the gel. Left in the shade the required time (2 hours they say, I left it 3) and washed it off. I gave it a wipe down with a cloth as a final wash down. The frame looks a bit cleaner but as for rust, the difference is minimal. I think that unless you are going to soak things in this stuff for weeks, you're not going to see much difference. I think I've had far better results using plain old vinegar and attacking the rust with a wire brush to be honest. According to the ingredients, the spray on Evapo-Rust is mainly just Phosphoric acid in a gel formula.