cleaner than any other vacuum I've had the chance to test by several orders of magnitude. I would take up to half a container of fine dust at a time from a carpet with a long pile, and I would compress it in the container until it was almost solid. By the way, I advise using a narrow nozzle with a brush for carpets with this kind of pile since it precisely cleans fabric furniture and carpets of any pile without winding and stopping! In auto mode, cleaning with a laser nozzle on a smooth surface is practically silent, allowing you to quickly tidy up something late at night without waking the family. I heartily endorse.