jms stylet oil

Anyone use both versions of Stylet oil and have any opinions on the efficacy? I have an existing powdery mildew infection I want to eradicate, to the extent possible, and was planning on purchasing the non-organic stuff, but my sulocal supplier only stocks the organic stuff. The label says...

I'm planning out my spray schedule this year and am looking for a 0 PHI solution for PM and DM, so I can control these diseases throughout the harvest season. Looks individually the 0.5% phosphorous acid (Rampart) sprays are good for DM and 1% JMS stylet oil is good for PM but is there risk of...