Product review (3 stars): Filter is fine BUT
First, price I paid here was much better than the replacement price for filters at Wal-Mart.
Every time I add water to the humidifier I rotate the filter as it extends it's life.
Maybe it's the filter or more likely the humidifier because it has to be replaced rather frequently do to scale buildup.
I will be looking for a better way to add humidity for night time due to the very low humidity environment in which we live.