By using Vortex Cleaning Action (VCA), incoming air is washed with a botanical solution and then returned to the room as fresh, clean air. Remove odors from smoke, food, pets, a stale house and more. Also works wonders for asthma sufferers. Safe for all rooms and not harmful to pets. Environmentally safe, non-toxic, non-pollutant, non-flammable, biodegradable and alcohol free. Includes three trial size bottles of Lime, Vanilla and Citrus solutions. Refills of these three scents, plus Lavender scent, in 8-ounce bottles are sold separately. Imported.