I am very pleased with my purchase. I have noticed that when the sun shines through the windows, I see hardly any dust in the air. I also like that there is an automatic setting that adjusts to the cleanliness of the air, so I can set it and forget it. I have the purifier on 24/7, but sometimes it's a little too loud for my taste when it is on its highest setting. So I tend to have it on low during the day, and I set it to high at night. It creates a nice air movement, so the air doesn't feel so stale. I have 2 dogs as well, but I haven't really noticed a decrease in the amount of hair I have to clean up. I would recommend this purifier to someone who wants to drastically improve air quality, not necessarily cut down on pet hair and dust on the floor and furniture. Also, I feel the purifier works best with an open floor plan.