My husband wanted us to use this for several weeks before reviewing to get a true take on how effective this item is with our air quality. We use this exclusively in our bedroom and my allergies gradually decreased-as did my husband’s snoring, lol. Win-win!!!!! The bedroom air smells slightly of a swimming pool, but feels purer and cleaner. We use this  before sleeping and  shut it off after waking. It’s nice to have indicators for
 salt and water levels-the hum it emits doesn’t distract from sleep. All in all, we’re glad to use this, and our health has improved! Recommend.