Good Product or Nonsense?

Thanks for all the experiences! 
Does anyone know if there was a more recent legit review
that followed a scientific method? 

If not why?

If I wanted to do it the right way I would get, say, four copies of a well done cd and compared Optrix, LAST, Auric and Walker treatments. Yeah, maybe better not to use Optrix on valuable gold discs. I treated three gold cds with it but only two Mo-Fi ones gave me that haze, another one didn't. No idea why. 
I have a top loaded player and clean the lens with some Disc Doctor or whatever it is fluid that came with their cleaning disc. I rarely play the player these days, as I remember there was a small difference when cleaning every 50 hours or so. Maybe it was 100 hours, not sure.
I only compared Optrix treatment with washing the discs in warm water with kitchen soap. Yup, Optrix was better but soap and water was better than nothing.

Another +vote for eye glasses cleaner or windex for fingerprints/light scratches. I tend to buy used CDs weekly and have never experienced an ill effects. Rubbing alcohol and/or soap and warm water works well.

Happy Listening!

If using alcohol to clean CDs, I believe it should be highly diluted, as in lens cleaner.
And I would worry about preserving the polycarbonate coating if using Windex... 
the S.C. Johnson website lists Windex's ingredients as water, 2-hexoxyethanol, isopropanolamine, sodium dodecylbenzene sulfonate, lauramine oxide, ammonium hydroxide, fragrance, and Liquitint sky blue dye.
I'm not a chemist, so I don't know for sure. 

In any event, what is the consensus with using cleaner/clarifiers on the top (label) side of the disc?

 

The difficulty arises when trying to compare various CD enhancers and cleaners and methods. When the same CD is used to compare two or more cleaners/enhancers, if the first one is effective in improving the sound, then there may be no further improvement to the sound by applying the second cleaner/enhancer, you know, since the first one did the job. And if there is further improvement to the sound of the CD then the conclusion could be the two cleaners/enhancers perform different functions. We’re not even sure what the functions of the various products are.

Different folks get different results. It’s difficult if not impossible to obtain consensus on CD cleaners/enhancers, which one work best, or how they work.

Removing mold release compound is frequently given as the objective but I see no evidence that MRC is used in the manufacture of CDs. If different CDs of the same recording are used for the comparison, there is the possibility that one is hearing the inherent difference in sound between the CDs, not the effects of the cleaner/enhancer (s). The optical characteristic of the polycarbonate layer has been predetermined as part of the geometry of the CD system, what with the nanoscale data and laser beam, so changing that optical characteristic should be avoided.

I’m all for “many systems, many testers, many CDs” approach to testing, generally speaking.