Product review (5 stars): They work fine. They are the product sold by the manufacturer ...
They work fine. They are the product sold by the manufacturer of the humidifier I am currently using.  I have gotten through this humidifier season with only one change of wicks, that is using two sets of four.  I have had seasons with different humidifiers and different wicks where I have needed three sets of wicks, or perhaps even four.  Perhaps the water is different this season.  Perhaps I am using enough bacteriocide but I think I do every year.  Perhaps it's the wick. Who knows?  BTW I am using a different humidifier and different wicks at a different location down the street and have also gotten through the season using fewer wicks. Perhaps it is the city water.