The robot empties itself automatically into the Auto-Empty Station in less than 30 seconds, using Philips DualWave™ technology. Due to its special airflow simultaneously sucking and pushing, nothing is left behind, not even long hairs. The station contains a 3.0-liter disposable, anti-allergy bag that can hold up to 30 days* worth of dust, hairs and other dirt, to enjoy 30 days with no hassle of emptying. The bag can be hygienically disposed without a cloud of dust - ideal for asthma and allergy sufferers.