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					Originally Posted by  sperry
					 
				 
				So, wouldn't a drop or two of dish soap achieve the same thing?  (Not that I read the links, but soap works by reducing water surface tension, thus making water "wetter" and therefore better at cleaning) 
			
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 Good idea Scott, go ahead and try it! 
    
RTFL
I think Cody is right on foaming. (Somebody please note on the calendar both that he may be right as well as contributed to a technical discussion) 
They also have to deal with corrosion and a few other goodies at least in a water only mix.