If your keyboard has an unresponsive key, or a key that feels different than the other keys when you press it, clean the keyboard only with compressed air.
Use the straw included with the compressed air to control airflow.
Keep the end of the straw about a half-inch away from the keyboard as you spray.
Remember to keep the air can vertical while you’re spraying (bend the straw instead of tilting the can).
Liquid from the spray can will potentially damage the keyboard.
1. Hold your Mac notebook at a 75-degree angle, so it’s not quite vertical.
2. Use compressed air to spray the keyboard, or just the affected keys, in a left-to-right motion.
3. Rotate your Mac notebook to its right side and spray the keyboard again, from left to right.
4. Repeat the action, this time with your Mac notebook rotated to its left side.