I have a microfiber cloth to clean the screen ( i just wet one half of it and wipe it down then dry it with the other half dry side... seems to work well. but what about the white keyboard/palm rests etc. Is there a special cleaning formula i can/should use; or can i only use water? should i use the microfiber cloth? It says that the cloth can be washed; so i can wash it out if i use a cleaning solution... Thanks!