Cleaning your Mac When cleaning the outside of your Mac and its components, first shut down your Mac, and then unplug the power adapter. Then use a damp, soft, lint-free cloth to clean the Mac exterior. Avoid getting moisture in any openings. Do not spray liquid directly on the computer. Do not use aerosol sprays, solvents, or abrasives that might damage the finish. Cleaning the Mac screen To clean your Mac screen, first shut down your Mac and unplug the power adapter. Then use a soft, lint-free cloth dampened with just water and wipe the screen. Do not spray liquid directly on the screen.