Keep your beer protected from flies, yeast, sediment and other contaminants by using this product. Simply place this plug in your beer tap overnight or when it's not in use for a long period of time. Its innovative design securely protects the tab's contents for a fresher, better tasting beer. For an added convenience, this plug's stepped design allows it to fit in all tap sizes. In between use, soak the plug in a sanitizing solution, wash, rinse and you'll be ready to use it again.