Product review (5 stars): Works Great.
Purchased my humidifier in 2010 from WalMart. The filters in the unit only lasted 4 months. Purchased replacement filters in 2011 and they were the same. This time when I went to WalMart they don't carry the filters any more. The ones I purchased here, have been in the unit for over 4 months and still have half their life left. Great improvment.