The first step when you run into the dreaded MacBook keys sticking issue is to simply clean them. Over time all kinds of debris like; dirt, dust, food, and whatever else has been on your fingers can accumulate on the surface of your keys. This, over time, makes them more difficult to press down properly – hence they stick.

To clean them, first turn off your MacBook to avoid any accidental keystrokes, or worse, damage. This is an important step that is often glanced over, make sure to fully turn off your device before proceeding any further as the parts under the keyboard can be extremely delicate.

Once you’re happy your device is completely powered down, use a microfiber cloth or compressed air to clean each key. You can also use a damp cloth with a bit of mild soap if there are any stubborn stains or residue. If you decide to do this, make sure your cloth is just damp, you don’t want any water getting stuck in the crevices around your keys.
Once you’ve cleaned the keys, make sure they’re completely dry before turning your MacBook back on.

The MacBook keyboard uses an interesting style, where the keys are sunken into the device. It can lead to build-ups like these easily, if you’re getting frustrated by it – it may be time to turn to an external keyboard.

A great first option would be this one, as it’s affordable, well-built and uses a much easier-to-clean keyboard style.