I wasn't sure about this product but I still bought it coz I can't afford the bigger ones and this is my first time trying aromatherapy. I'm really satisfied with it! I use it in my bedroom/office, and it works perfectly! I use it every day and I've tried several essential oils : anise, lavender, clove, lemongrass and cedar. The scent is strong enough to enjoy but not too strong. I only had trouble with cedar, which was way too strong and it just wouldn't go away even after 5 hours, so I unplugged it. The scent usually lasts for about 2-4 hours, depending on which oil I use (6-10 drops each time). If I leave my door open the scent goes out into the whole house, even downstairs! The only negative thing I can think of is that the beautiful white colour turned kinda yellowish after several uses, maybe because the oils I use are tinted yellow. But it doesn't really bother me. Overall it's a great product, it doesn't take any space at all, and it works perfectly! I highly recommend!