Product review (4 stars): Seemingly good replaement
Not sure if you can really say these things work, I mean how would you know if they didn't. I was concerned when I saw black ice in the glass, even though I emptied the ice tray twice. I finally gave up and just threw away the black cubes after reading that it happened with new filters and it was just the charcoal, I'd never had it happen before and may very well get a different make next time to see if it happens again.