Product review (1 stars): Poor quality not good
Ordered these a couple times thinking the first time I got bad ones but no, the  Second ones were just as bad. The filters turn yellow and the black netting starts to crumble after only a couple nights. I was trying to be diligent about  keeping everything clean but these filters simply don't hold up long at all. Also it is weird that it's a three pack since my humidifier only needs two.  When I realized these were a bad purchase I decided to just cut my losses and spring for a humidifier that doesn't require filters. I don't understand the almost 5 star rating for these. In my opinion they are pretty much useless.