I've been using Green Magic that Lynn Treece makes for a couple of months now, and it works as advertised. I only had a few plants that had rust, and the best way I can describe what happened is that it dried the rust and stopped it from spreading over the entire infected leaf. As a bonus, it kills aphids. The smell reminds me of windex, but it's a lot lighter than the smell of Immunox or the Bayer 3-n-1 that I was using before. Just my experience so far ... YMMV ;)
