Anybody who's ever had a bad experience with an unclean public restroom understands that when it comes to sanitation, the fewer unsanitary surfaces you have to come in contact with, the better. Most public bathrooms are used by literally hundreds of people on any given day, it's absolutely shocking how few of them bother to properly wash their hands before leaving. Because of this, even the sanitation supplies provided in a public restroom could be unhygienic to use.