Why do so many people leave the toilet seat up all the time? After all, it’s not the most attractive display object. Now, convincing medical evidence confirms we should cover the potty before flushing.
Researchers at Yangzhou University in China utilized computer modeling to show that flushing toilets does not keep all viruses and water in the bowl. They report in the journal Physics of Fluids that spray can fly as high as three feet! Ji-Xiang Wang, one of the researchers, added that the velocity of the spray could be even higher at public toilets.
