Product review (3 stars): Filters cannot be cleaned easily
Maybe it's the minerals and calcium in my city's water, but after about 2 months of use, these filters get all hard and crusty. I've tried to soak them in a humidifier cleaning solution, but it doesn't do much good and I have to replace it anyway. At least I can get them for a decent price by buying 4 at a time, rather than 1 at a time at Sears.