I like it and will say that it works. I have it in my bedroom. Before I purchased it, I would sneeze at least 2 or 3 times EVERY morning when I wake up. Now that I have it (about 3 months now) I’ll say it’s happened about 5 times. I must put it on the high setting before going to sleep. I notice that the mornings I woke up sneezing, I’d left it on the lowest setting. My only complaint would be paying 20 for the replacement filter that last between 3-6 months. Depending on the usage.