EcoGecko Solar System - Air Cleaner & Revitalizer with UV Light and Lavender Oil, Black Wash The Air You Breathe Naturally Using Water. UV Light Kills Bacteria And Viruses From the Air 7 Layer Water Filtration System Filters Out Smoke, Dust, Pollen, Pet Dander and other Air Impurities Add a Few Drops of the Included Aroma Oil to the Water and Your Space Will Smell Great Adds Humidity - Ideal For Air Conditioned And Heated Environments. Low Cost. Just Use Tap Water Covers Approximately 600 Square Feet