One of my optical drives began having problems seeing discs, either for reading or writing. I figured that it was due to the fact that it had been quite a while since I cleaned it. Therefore I dug out my Philips Cleaner disc, which is actually no more than a disc with a couple of very small brushes on it, which dusts the lens as it rotates. At first it didn't seem to help, but after repeating it a couple more times, the drive does see the disc for either reading or writing, but not as well as it should, because I sometimes have to insert/eject the disc several times before it starts working. The only explanation for this that comes to mind is that those little brushes are not as effective at cleaning as one might hope. Is there a better method of cleaning, short of disassembling the drive to get to the lens for a manual cleaning?