Splash back to black holes

Here's an article titled: Physics whizzes create 'black hole' to stop urinal splash-back: Aiming to keep khakis clean of urine droplets, a team of researchers turn to moss to develop an insert that will grab more pee

and a device worthy of an Ig Nobel Prize, the black hole to prevent urinal splash back.

Have you (males, that is) experienced splash back from micturating at a urinal? These physicists conducted a study of how to prevent such a problem. At the link there is a video simulation to show the effects of angle on splash back. Interesting, in an off-color way.