Product review (3 stars): They work and it is what I needed
The problem with the Vonado Wick Filters is that they don't last very long. We use our humidifier in the evenings and have for many years, but the filters don't last very long.

That being said, I like the Vornado Humidifier and they have kept the filters the same whether you own one that's 10 year's old or brand new.