Product review (3 stars): Good quality filter for a flawed appliance
Well, if you were stupid enough (like myself) to buy one of the humidifiers that requires periodic wicking filter replacements, then you need these. Like all the time.

The problem with the scam that these humidifiers demonstrate clearly are the expensive filters they require. They are essentially a chemistry and biology experiment wrapped all into one. The elements in your water? Yeah, those are going to get in the filter fibers and turn it hard and brown. Remember how moist environments and mold spores/microbes LOOOOVE each other? Yeah, this is like a microbe hotel.

If you can get two weeks out of a filter and it doesn't smell like a dumpster or a damp roadside couch, consider yourself lucky.

Better yet, toss the thing, and buy an ultrasonic humidifier.