Only used a few times. I also separately purchased 2 of the required 1 liter bottles and 2 bottles of ginger ale flavoring

Sparkling Water Maker turns plain water into sparkling water in seconds. Designed to fit beautifully into any modern day home or office, it incorporates a slim, space saving design, without the use of any plugs or electricity. This model features the company's proprietary snap-lock technology that instantly "clips" in the BPA- free Carbonating Bottle for quick and easy carbonation.