Product review (1 stars): but it was horrible! I couldn't believe the white powder it generated
I really wanted this to work so I wouldn't have to go out and buy distilled water..but it was horrible!  I couldn't believe the white powder it generated.  Last year, I didn't use it...I used Brita filtered water in my humidifier.  I still had to change my furnace filter every month, but I didn't have to deal with that white dust on everything, even the inside of my curio cabinet and pantry.  This year after I started using it, I had to dust two or three times a week.  I stopped using it; now I only use distilled water and have no problem.