I bought this a month ago. I've been using it since I received my Blue Air purifier 3 weeks ago and I'm so happy I purchased it. My room gets a  bit stuffy and small follicles tend to roam my room so I was sneezing ever so often and I'd wake up with the sniffles but now nothing! it works wonders and I don't sneeze anymore. Plus the small follicles would be all over my hair before brushing my hair and now there is no follicles. It's definitely worth it although I would enjoy it more if it was a stronger air purifer.