Product review (3 stars): The metal should not be exposed like that.
The wick seem to work well. I subtracted a star because there are sharp threads of metal running through it. I'm sure this is to reduce moldy buildup but the instructions on my humidifier say to rotate it every 1-2 fillings, and it's hard to do so without getting a little pin prick from the metal. The metal should not be exposed like that.