Original review Oct 2009:Bought the green frog, cute and very quiet. Produced lots of mist without white dust (I use filtered water). But it only worked for ONE day. There are 2 lights, green for when it's working, and orange when there's not enough water. After the perfect 1st day, then orange light went on even with a full tank of water and stopped producing any mist. Very disappointed at the inferior quality. Returned the frog and bought a penguin, I hope this one lasts.Update Feb 2013:Bought a blue penguin from the same manufacturer, it lasted 7 months and started leaking at the bottom. Tossed it. Bought a yellow duck and a gray elephant and they both lasted years. I guess it's hit and miss with these humidifiers. For some reason, the duck and frog (weaker mist from 2 spouts) are quiet but elephant and penguin are louder (strong mist from 1 spout). Can you tell I'm obsessed with animal humidifiers? lol