If your device is dirty and needs to be cleaned:
1. It is important when trying to clean your device that you avoid getting liquids in it or using anything abrasive. You run he risk of scratching the screen or causing water damage.
2. The best way to wipe anything down is with a soft cloth. Using a cloth will help avoid causing scratches from the abrasiveness.
3. NEVER spray any aerosol directly on it or use bleach cleaners. Dampen your cloth with electronic safe cleaner instead.
4. Make sure when and if you clean your device that there are no power cords plugged into the computer.