But the effect is marred when guests sometimes spit at the ghosts, and the saliva ends up on the screens where it glows under black lights. Because typical cleaning products bleach the screens, David Graefen, the ride's service manager, said his crew created a special saliva-cleaning solution.
Link - via boingboing
From the Upcoming ueue, submitted by calebkraft.
But I did see them hosing down all the streets on Main Street each night. And otterly is right about the lights. They turn off some but leave a bunch of the outside lights on. Like, they'll turn off the glittering signs.
I can't imagine how nasty Disneyland gets with kids barfing and all personal emergencies. They do hide it really well.