I don't see entire sidewalks covered in bags of refuse though.

I took a biology class where we collected different samples around the public restrooms.

In fact, the wet handle would have the fewest germs because people have washed their hands (ideally with soap.)

You're looking at more germs on the outside of the bathroom door, the stall handles, and soap dispensers. Don't get me started on those nasty air dryers-gross.