Product review (5 stars): Good Stuff
I've used these filters for four years now.  I run them for about 7 or 8 months and just replace them, even though I could leave them in because I don't notice any detrimental effects even at that point.  I just think it's a good idea.  We have three adults in the house and the water and ice dispenser is used frequently in our Samsung refrigerator.  I would NOT pay extra for the big bran name or store bought filters.