"Pritesh" wrote in message
oups.com

Do all cd lens cleaner work or only some work like cd cleaner which
only some work ?

Its more like that many of them only work some of the time.

Which one do you recommend is this best ?

Every one I've seen was pretty much like the rest. There was a little
camel's hair brush glued to the underside of a CD. There was an audio or
data track on the CD that would guide the lens until the brush stroked it.

This plan has a number of limitations. For example, what if dirt on the lens
wasn't the problem? What if the dirt was of a kind that dry brushing
wouldn't remove? What if the lens was so dirty that it couldn't track a CD
well enough to bring the brush over the lens?

I've seen CD lens cleaners make marginal players work better, but I've also
seem them have no effect at all. I sense that their effectiveness is more
dependent on the nature of the problem, given that the cures are all pretty
much the same.