Another group of people who are treated as invisible is those who work in Housekeeping. I've assisted people with leukemia, and I understand how critical it is for hospitals, especially, to be CLEAN. Sanitation is not just important, it can be life-saving. Whenever I come scross people in Housekeeping, anywhere, hospitals, motels, anywhere, I always thank them for what they do. They always seem very surprised and really appreciate it.