I live in southern Utah where we’ve had drought conditions for about 7 years now, resulting in tons of blowing sand and dust. This combined with strong spring winds has made dusting my house an almost daily chore. I now have 3 Blueair Blue Pure air cleaners, one in our main living area and one in each bedroom. The difference is really noticeable! I can smell the cleaner air and I only have to dust once every week or two. I change the pre-filter once a week and ordered a second set so when I wash one I can immediately put the clean one on and keep the purifiers running continuously. It’s been a real game changer!