Had my mac for 3 years. But when I get a new mac I want to have a better cleaning plan. The screen gets dirty ALL the time. So normally I use a glass cloth to clean screen. I usually have to press down hard because being to light won't get rid of smudges. I sometimes wet the cloth with a little bit of tap water and clean which just creates more smudges. I read distilled water is better but not sure where to get that.... So how do you keep your screens clean? I want to do better because I must have messed up somewhere getting a piece of dust stuck in the middle of the screen.