Jim, could you tell me where you bought your "ultrasonic"
device an how much?  I had bought my last one a few months back at  Walgreens 
for $10 as they were fazing
those small ones out.   I gave my original humidifier to my
lovely mother-in-law who will be 90 yrs next Mon.. It has helped her  
immensely with her breathing problems.  Pete