Harry Pearson's comments regarding .....

L'Art du Son LP cleaning fluid is said to be outstanding, and it may be logical to project that the CD fluid should also be very good. Reports are that Audiotop CD fluid is excellent as well. Lower cost yet effective CD treatment solutions include Optrix and Esoteric Mist. And don't forget Nordost Eco3 on the label side of your discs.
Brian

When you clean a CD all you're cleaning is polycarbonate.
Mix up a weak solution (10-1) of distilled water and cheap shampoo in a spray bottle. Use a cotton towel and not paper when doing the cleaning.
Then you'll have something with which to wash the windows inside your house with as well.

Well, may be worth jumping in here on this topic.
I use Record Research Labs Shine Ola.

It has had positive professional and many user reviews and is most importantly safe on your CD's and SACD's.
There are a lot of stories on the audio forums about cleaning fluids and home brew ideas that end up causing damage (Armor All, etc.)

I do hear a difference when using Shine Ola (more focus), but whatever you use, make sure it is safe.

I second the Shine Ola. I just started using it after having used Nordost Eco 3 (which I still use on my cables) and Audience Auric Illuniator. The focus is definitiely improved.

I also use the Shinola. It's safe and makes everything sound better. It's also essential for DVD-Videos, especially rental ones. Some won't read in my DV 50 without first cleaning with the RRL. There are some reviews and reviewers that I halfway trust, and some that seem inconsistent from month-to-month.
Deb