LONDON — You might want to think twice before you order off a touch screen kiosk, seeing as how most of 'em are covered in nasty gunk.<br /><br />A Metro UK investigation swabbed Mickey D's touch screens from eight stores in London and Birmingham, and found a treasure trove of bad bacteria and traces of poo.<br /><br />Bacteria may be everywhere, but with the amount of gut and fecal bacteria on those kiosks, they might as well have been in a hospital. These germs are extra-bad too: staphylococcus, proteus, even listeria.<br /><br />It takes just one sick, germy mofo to contaminate a screen and god knows what else.<br />Before long, you've got diners going straight from screen to table and getting infected with dangerous diseases.<br /><br />McDonald's claims the self-order screens are cleaned frequently throughout the day, though clearly whatever's being done isn't enough. They could put a hand sanitizer or two by the screens, but really, people need to be washing their hands before they eat.