Product review (5 stars): HWF65 Holmes Humidifier Replacement Filter Review
The HWF65 Holmes Humidifier Replacement Filters are satisfactory as long as I use the Bacteriostat in the water and wash the filter and humidifier once a week in dishsoap, then one filter will last a month. I bought 4 filters which will last from Nov. 12 until March 12, then the majority of our wood heating season in northern WI is over with. I'd rate this a 5 Stars but the star clicker didn't work. Here's the filters: http://www.amazon.com/gp/product/B0009GZKHS/ref=cm_cr_rev_prod_title