Needs better instructions
When you get this product, please unscrew it at the middle. There is an unopened air freshener packet inside. Mine was lemon, so I threw it away. It works well, but the blue light stays on. It is small enough that I can put it behind my water thermos to keep the light from disrupting my sleep. It kept making a strange sound, so I unscrewed it at found the packet. There are instructions on how to take it apart, but they are in another language.
Rating: 3 stars