Add an exotic touch to any indoor fountain with the "Foggers." Choose from the original fogger, the all new "Low Head Fogger" for lower fountains or fogger with LED lights. Simply place in fountain, plug it in, and instantly the free flowing fog creates an atmosphere of mystery and intrigue. Adding a few drops of essence oil produces a beautiful aroma to immediate surroundings, enhancing the mood. Ultrasonic technology eliminated the need for any chemicals. Dry-ice effect without the dry ice. Completely safe. One year limited guarantee.