Thanks for referring to water heater settings; I moved it higher. I wanted to discuss ivermectin with a dermatologist yesterday, but he knew nothing about demodex mites, I mean it. I reminded him they were incredibly tiny, almost impossible to see, he checked my scalp and back (without aid of any magnification) and pronouned me "all clear". I didn't remain long in his office and had impression he thought I was quite balmy. Even my primary care doctor a couple weeks ago was somewhat skeptical when I told her about the mites. I'm not getting much help from doctors I've seen on these mites, and am grateful beyond words for your advice and sharing. Thank you a hundred times for these posts.