Product review (4 stars): Holmes HWF62PDQ-U Humidifier Filter
No fault of the filter. Its does its job.. But when you store your humidifier, the filter is usually useless to use again once it dries. It gets out of shape and discolors. Still, I like the filter option and when I purchase through Amazon, I normally buy two as the humidifier does not function without it because the vapors are drawn through the filter.