Used on a year old Bose Wave IV single CD system that was occasionally skipping and it resolved the issue after one use.  We live in a high wind, high dust area and I suspect that had I tried this CD lens cleaner on our older Bose Wave II, I'd not have had to replace it.  Just pop the CD into the player with the label up and listen to the approximate 30 seconds of verbal instruction and music.  When the music stops, advance to track 3 and the same voice will soon tell you that cleaning is complete.  You can either continue listening to the music on the disc or remove the disc at this point.  We heard a small amount of soft whirring and clicking during the entire process which lasted less than a minute. Note that when removing the disc, you want to avoid handling the underside of the disc as the two tiny microfibre brushes located there will pick up oil and debris from your hands.  Store the disc in its jewel case and away from any extreme temperature and high humidity areas to keep it clean and functional; it should last years.