I was so excited about this diffuser since I love my other Saje diffusers and the concept of being able to have one in the car. It worked great the first few weeks but then it seemed like nothing was happening when I turned it on. I would open the top to check and could see a little bit of the water bubbling but not enough to send the mist out with the top on. Even after turning it on every day, the water level would not drop making me suspect nothing was happening since I have to refill normal diffusers regularly. It's a disappointment because I thought this was going to be so fabulous and had many friends ask about it when they saw it in the car.