Product review (5 stars): Honeywell HMP-12P quicksteam mineral absorption pads
I purchased these to use with my Honeywell Humidifier. They are great. Last reasonably long.  5 pak came with the humidifier and I ran out, so I ordered more.

Definitely keeps the humidifier from getting build - up.

Highly recommend them if your humidifier calls for them. GET THEM. Winter is coming!!