Gonzo narrows his eyes. 'How often do you clean that thing?' 'Every night,' the waitress answers. Her smile is strained. 'That's it? Do you know how long it takes for Listeria to grow under those hot lamps, even with ice?' Here we go. 'It can happen in just five hours. Five hours and you've got the salad bar of death!' The waitress looks confused. 'From Listerine?