Pollutants in our outdoor air are washed away one way. With water from rain. Wash the pollutant's from the air you breathe in your home the same way with our MDN air washer and revitalizer. Bacteria, dust, pet dander allergens and bad household smells are literally washed out of your air, the natural way, with water. Simple fill the bowl with tap water, add a few drops of the included aroma oil and turn on the rainstorm, the unit will pull the air from the room in, wash it through the water and aroma oil and release clean pleasantly scented air back into your room. The shimmering blue LED light emitted into the water and the whirlpool of swirling water will turn any indoor space into a Zen like atmosphere. Very Economical Works on AC 220V 15W Power Silent Rotator's Speed 2800 RPM Its the Best Alternative for Aerosol Dispensers. It covers much larger Area (About 800 Sq Ft). Have much more lasting effects and Maintains the Ambiance. Excellent for Bigger Areas like Hotel Reception Office Reception Cinema Halls Lobbies Conference Rooms Big Drawing Rooms Bed Rooms Restaurants Etc