CD lense cleaner. Is it necessary ?



I'm wondering if my cd player may need the optical lense cleanded as it is a used player. I've seen the basic cleaning discs such as the ones in Radio Shack and other electronic box stores. Is this procedure really necessary? If so how often? and which process/brands of cleaning devices really work? Again, it is the optical lense in the player's transport that i'm looking to clean. Thanks.
bshapperd
If you live in a dusty environment, lens cleaning is mandatory. The dust build-up over time will definitely affect the sound. I have never damaged anything using the cleaning disk. You are more likely to damage something using an anti-resonance mat.
This is what "What HI-FI" has to say about your question in a section of their web site re: system maintenance...

...CD player lenses can also get dirty, especially in smoky or dusty environments. If your player starts to skip, you can try a cleaning disc - these usually have little brushes on them to sweep the lens clean, and are sometimes used in conjunction with a drop of cleaning fluid provided. They usually do the trick - if not, older players may need to go to a repairer to be opened up for a clean.
audioengr,
How can you damage something by using an anti-resonance mat? This is the first I've heard of this. Does this happen often? Thanks.