I have been using iKlear for over a year on my PowerBook and it works well. I don't like the wet towels though. They leave streaks on the screen. I just bought a small bottle of iClean it is work quite well on the LCD. It sprays in a fine mist so you don't have to worry about the excess dripping into the cracks of your screen. I also use it on my TV screen. iKlear or iClean should do the job.