Weebeesdad - Sorry for the low response. I try not to visit these forums too often.
The answer is that L'Art Du Son makes BOTH a CD cleaner/treatment and also a vinyl cleaner. I've never tried the vinyl treatment, but I hear it is good.
I use the CD treatment on every new CD I buy. When I first tried it, I would listen once before treating the CD (to judge the difference). I've long-since stopped doing that, as it improves every CD to some extent or another.
I've found that (physically) very well-produced CDs, like XRCDs and Reference Recordings are improved less dramatically than most.
I hope that helps