Product review (2 stars): Disappointed
I was so so excited to see these for my humidifier because spending $1/day & hauling home gallons of distilled water was getting irritating after just week two.  But dusting every day is equally annoying so I'm just going to return the unit.  Unfortunately these just don't work well enough with my Arizona water to justify the $90 price for the unit & hassle to run it cleanly.