Cleaning CD/DVD Rom Drives

[Musicman51]

I have been told conflicting methods of cleaning my cd/dvd rom drives. I was wondering if possibly someone could shine some light on this topic. For instance, i purchase these cleaner cd disc for a buck a piece at the dollar store {philips and maxell}. And i shoot a blast of canned air in there to clean any other dirt paricles out. My local computer guy says thats the worst thing i could do to my drives. Seems like somethings missing buying a dollar cleaner CD for a $140.00 drive how do you clean yours???