Mirror and lens cleaning is easy, and you don't need any uncommon materials to do it. I was a photo lab technician in a former life and am very familiar with PhotoFlo. You don't need it. All you need is a mild liquid dish soap and some ordinary distilled water for a final rinse. Guaranteed spot-and-streak free. I've been using these materials for decades with excellent results. There's no mystery or black art to it. Common sense and care during the process will yield a clean, streak and spot-free mirror with no coating damage. Some things don't need to be re-invented. Maybe optics cleaning would be a good subject for a club meeting one of these days. Next time I clean a mirror, I'll shoot some video and post it on You Tube or Photobucket.