I don't know if a 2 star review is fair for this product - but that's what I'll give it.  This was an "impulse" Amazon purchase.  I own a 20+ year old vehicle and thought, after 20+ years, the CD player might benefit from a good cleaning.  (I also ran this CD lens cleaner a few times through my five year old PC's CD player.)  After running this lens cleaner (numerous times) through both my car's and my PC's CD player I noted NO difference in player performance.