That is a polymer crystal humidifier, simply another implementation of the 50/50 solution. the polymer acts much the same as the foam in traditional humidifiers. and will only release humidity.

The beads I linked to are essentially a " set and forget" system. you only need to purchase them in recommended quantities, (I suggest about 20% more than vendor recommends), wet them down, and they do the rest.


Do some research on Humididy beads, you will find them almost universaly recommended.