Review on Perfect Aire Personal Travel Humidifier - Ultrasonic Cool Mist with Auto Shut-Off, Ideal for Travel & Small Spaces at Home, Office, Hotels by Kayla Schmidt

I was able to use this humidifier successfully from the first setting. It worked for 6 hours providing good hydration and then stopped producing vapor. I emptied it and rebuilt it the next day. It worked flawlessly for several hours. The next time I used it, it worked for a few hours and then stopped producing vapor again. Very frustrating. I should also note that the motor is no "silent whisper". When it's on, it has a fairly noticeable low mechanical hum. I have decided to return the item. The only reason I'm giving two stars instead of one is because the seller actually refunded my money and told me not to bother sending in a defective unit. It was amazing customer service. (I almost wish they would offer to pick it up so they could recycle or repair the parts. Now this just represents more e-waste for me to deal with).