My 2002 Pontiac Montana's CD player started acting up a few months ago. Almost every time I put a CD in, the player would spit it back out and the display would say "CHECK CD." After 3 or 4 tries, the player would finally accept the CD. But it sure was frustrating. So I stopped at the dealership and inquired about this problem. The first thing the service advisor suggested was to try a CD lens cleaner. I had never used one of these in my life. And I've had CD players since 1984. But when I went to my brother-in-law's house for Thanksgiving, he had just purchased this same identical CD lens cleaner at the local Meijer store. I asked him if I could try it out in my car's CD player and he gladly obliged. Well, after one cleaning, so far the CD player hasn't rejected any of my CDs. And we drove back home after Thanksgiving...almost 300 miles...and played many CDs. So, for now at least, I'm convinced. I came right home and ordered this Maxell CD lens cleaner for myself. I don't know if I'd feel comfortable enough to try it in my Mac desktop or PowerBook...but I think I'd feel safe using it in my Sony CD player or PlayStation. In fact, the PS2 will be the first device to get cleaned when this arrives. It's been rejecting discs, too. Maybe the lens is just gunked up with dust. Anyways...it fixed my car CD player trouble and saved me a lot of money that the dealership would've charged me to service the darn thing. I'd recommend it highly.