Product review (3 stars): I knew that they're not exactly like the manufacturer's filter
I was looking for replacement filters for our Vick's GermFree humidifier, which only came with one filter that needed to be replaced after a few months. As soon as I saw the filters, I knew that they're not exactly like the manufacturer's filter, but I thought they'd be OK. When it was time to replace the manufacturer's filter, it was just dirty. When it was time to replace the Pro Care filter, it had mold all over it - not what I expected, or wanted to see. There was no change in the conditions in which we had been using the humidifier, and I had followed the cleaning and disinfecting instructions (every week). I'm not happy that there was mold in the filter, and will probably try a different replacement next time.