no...not familiar with them...what are they?
They have them at Walmart and online and are all the rage right now. lol. Basically it is this little thing (varies in size, color, and style) and you put water in it and you put a couple drops of an essential oil (they are usually sold near the diffuser) and when you turn it on it has a steam/vapor coming out the top and it is whatever scent your oil is. The oils are suppose to do different things. Like relax you, relieve stress, help you sleep, help you breath better, or whatever. They have a ton of them and they do seem to work. It has been proven that certain scents can have effects on you.
It is the same with a lot of the natural herbs and stuff that help your body and health. The FDA does not want you to know about it because they want you to have to spend money at the pharmacy. Not sure these oils can help you be healthier though.
Look at your Walmart. We have them in the pharmacy stuff near the vitamins and also in the scented candle area. I am thinking of getting a second one and putting in the other end of the house. It also (or at least the one I have) turns off when the water gets low. They also I think have some that run for like 4 hours. And won't run if the water is not sufficient.