Sacrifices the quality of the mouthwash in my opinion.
The idea of this pump was awesome. However, since I began using it, the consistency of the Listerine has changed. It is syrupy and tastes a little off. Maybe the exposure to air/oxygen caused this reaction. It can be closed, but then you would loose the convenience of having a pump which encourages everyone to use mouthwash after brushing.
Rating: 3 stars