Can anyone tell me about CD demagnatizers?

I've got a question concerning the Auric Illuminator gel.

I store my cd's in plastic sleeves that contain a cotton-like material on the inside. The data surface of the cd is placed facing this material. The label side touches soft polyethylene-like material that makes up the outside of the sleeve. These sleeves are made by Disc Sox specifically for cd storage.

Do you think the action of sliding the cd in and out of this sleeve negates the good that the Illuminator gel does? I'd hate to have to apply the gel each and every time I use the disc. I do find the pen and gel provide a weightier and more precise presentation. Good product.

Thanks for any input

Kenl, the gel may wear off over time but not from just one removal.
My guess is that Auric should be more durable than Armor All, Rainex, Novus, etc. which are more of a liquid than a coating.
Sean and others have measured higher error rates reading CD's with the paint around the edge and is not recommended anymore.

I recently purchased a bulk tape eraser from Radio Shack. And it does make a difference with CDs. A pretty big difference at that. I will go into more detail as I listen to more music and compare.

KF