I don't often write reviews, however I'm quite disappointed. I loved the look and function of my diffuser while it lasted. I bought it in 2018 and have taken great care of it, following all directions recommended by Organic Aromas. It stopped working a few months ago and was out of warranty. I was told I could send it for repair, at my own expense to have it shipped and with no guarantees. What prompted me to write this review is I now have another machine that has also stopped working. I reached out to the company to let them know, and it was reiterated I could send them for repair, again at my own expense for the shipping costs. These machines are beautifully crafted and are worth the money, provided they work longer than 3-4 years.