When I use a public bathroom I don't:
- spit in the urinal when I walk up to it
- flush before I go
- hold on to the flushing handle
- lean on the wall
- talk to the person next to me
- pick my nose
- wipe it on the wall
- put my bottle of water on back of the urinal
- put anything on the back of the urinal
I do go to the bathroom, make sure my zipper is up, wash my hands, and hope that someone is coming in when I leave so I don't have to touch the door handle.