At home, you probably keep things clean and sanitary for your own benefit. But when you are out in public, the sanitary practices you employ are for the benefit of everyone else. Sanitation works on a public level. If you pick up your trash and wipe down your grocery carts, that benefits everyone. If others do the same thing, it benefits you. This is a social contract we all have with one another. Thankfully, we have sanitation workers to pick up the slack and keep the world around us clean, too. We'll write more about their work, and about sanitation in general, on this blog.