I’m curious about this as well. After several years of orchid owning I finally have my first infestation: scale. Most likely brown scale. I just had aphids on a pepper plant and used a soap based pesticide and it killed the whole thing. I’m was going to try the method 1 pps but I don’t think it’s available in stores. What has been most successful for people for scale? I’ve been having such great success lately. I really don’t want to hurt my babies!