Sanitizers do next to nothing anyways. All advertising, no substance.
http://www.cbc.ca/consumer/story/2009/12/01/consumer-hand-sanitizer-cbc-tests.html
Just wash your hands every now and then, and don't panic. We have an immune system for a reason.
not to mention the super-super short shorts worn on the rides, and the peanut butter residue on little fingers as they get into dumbo!!!!!! (and both myself and my son are allergic to peanut butter....not contact thank god). i think we can only control what we can, take precautions when practical (i guess a relative term), and not be paralyzed by our fears!
Ooooh....as the mother of two I'm betting that the chances that the "exploding diaper" happens while seated on a Disney ride is significantly higher than zero.