Product review (5 stars): No watery messes
Evaporative humidifiers are really the only way to go in my opinion--they fill the air with as much water as it can hold and then stop so that you don't wind up with soggy carpet, peeling wallpaper, or streams of water running down your furniture.

I find running these filters with tap water and replacing them more often is cheaper than running them with distilled water and not replacing as often.

These filters fit the older Kaz humidifier models.