Product review (4 stars): Their called "Filters" but TaoTronics says they don't need to be replaced on their model
These filters have a lot less "rocks/pebbles" than your stock filters that comes with your humidifier.  Therefore, these filters are cheap and overpriced.  I have the TaoTronics Ultrasonic Cool Mist Humidifier.  Also, notice all but one of the pics show the filters uprite on their flat side.  (that's good for easy pic taking but...).  The rocks cover the center housing making it look like there are more rocks than what actually exists.  My stock filter easily lasted a month longer than these.  Will be returning these, as TaoTronics says they know nothing about these filters and their filters which look exactly like the Remedies model--don't need to be replaced.  Sound confusing ?