“First off, shipping was a little long but super safe for the product - well packaged. I have my first shipment in every very dusty downstairs room (4). They seem to rid the air of floating dust. My husband and I are not coughing as much. Unfortunately, we both got horrendous colds (plugged ears, full sinuses, and coughing. We live in the highest pollen and mold areas in the country - the Tennessee Valley. We never open windows so I look forward to seeing what these filters do in this season.”