She said that in old, well-loved pillows, the stuffing is 70% dust mite.
I asked Dr. W about dust mites. "I want to see dust mites," I said.
"You can't," he replied. "They're too small. You need a microscope."
"I have a microscope," I countered. I have my childhood microscope, and as a nerdy kid I peered at onion skin cells and pond scum. Once I made a hay infusion and found paramecium and vorticella (I think), which swung frantically on their stalks like tether balls. A paramecium is a single celled animal, so surely a dust mite is larger. A dust mite has gotta have 10 cells at least, maybe even more.
Dr. W didn't want to play. "You can't see them," he said again, impatiently. "They're way too small."