I keep this in my living room area as that’s where we spend most of our time. It’s a salt based purifier and works wonders on the air in that space. It lasts quite a while on each setting. There was a bit of a plastic scent to it the first few times we ran it, but that seems to have remedied itself with cleaning and use. I’d recommend to anyone who lives in a winter climate where you’re cooped up indoors all season.