Product review (5 stars): Use your humidifer longer between cleanings without getting slimed!
Sounds hokey in the description. I was prepared to be disappointed but thought I'd give it a shot anyway.  Silly as the idea sounds, silver capsules really do reduce the buildup of slime inside a cold mist humidifier.  It doesn't prevent it forever, mind. If you forget to wash the humidifier, it will get a bit slimy after five or six uses, even with distilled water. But before I got this, my humidifier was getting slimy after just two uses.  So, yes it does as advertised.