Hmm. Never have had to clean my trackpad. Stays very clean. Honestly not sure why.
Now, even though I keep my hands nice and clean, the oils from my fingers get on my keys, and this smears my screen when it's closed. That, and my wife, whom I've told a million times not to touch my monitor, keeps pointing at stuff on the screen when showing me things, which causes more smudging.
So I wipe the exterior of the case where the apple is and where my wrists rest (both of which get very dirty from me lugging the computer all around) with these wipes called "Kleen & Dry." It's a two pack. One wipe that has an alcohol solution, and the other wipe is dry. I go over the screen and the case with this, and it looks like it just came out of the box.
