This is quite possibly common sense, and I may just be paranoid, but thank you for bearing with me. I've been having issues with my DVD drive on my Macbook Pro (Leopard, purchased in October 07). When trying to play any dvd, it continually skips and claims to be skipping over damaged areas that don't exist. Anyhow, I purchased a Philips laser lens cleaner to see if that will fix the problem at all. I had never actually purchased one of these discs before and didn't really know how they worked, or if they all work the same. This one has two little brushes on the underside of it (are they all like this?). My main question, though, is if this is safe to use on a Mac CD/DVD drive? The instructions show it being placed on an ejected tray-style drive. And it just specifies not to use it on gaming systems. Is it safe to use on a Mac disc drive?