no one ever had to tell me how to use a urinal, and if someone had to tell you, then that says more about you than it does about the urinals, and as for them being unclean, obviously they're unclean, that's what they're for. they get dirty so that the floor doesn't. if your only complaints about urinals are that you're bad at using them and that people use them for their intended purpose, then just admit you were wrong.