Bought this item because of the wonderful reviews on Amazon, however I was disappointed with how loud the motor is when on. It isn't the diffuser you can leave on while you sleep, or when you're trying to get to sleep as frankly it's just too loud. The vapour emitted is also pretty strong, even on the lower mist setting which is a little unsettling as the smell becomes too overbearing in a room. If purchasing this product, intend to use it for a main room like a family or a lounge room as it's definitely not made for the bedroom. Will definitely be purchasing a different diffuser, one that is a little more subtle and a lot more quieter.