Suitable for all types of regular spirits, also suitable for acidic drinks material: plastic Can the pouring spout be kept on the bottle? not recommended. Unless the alcohol consumption is significant (frequent bartender, usually the wine will be consumed in about a week), the mouth is not sealed and the alcohol will volatilize if worn for a long time. Can all bottles from this spout be used? Most basic wine and sweet wine bottles can be used, but some special caliber bottles cannot be fitted with this mouthpiece. Reminder: The pouring spout is reusable, but since there will be liquor left inside the spout after use, it should be washed and wiped dry when two different wine bottles are replaced to avoid mixing of residual liquids, and also when not in use Wash and air dry.