After a few months of use, keyboards of laptops gather oils, dust, food crumbs, and drink drips, which should be cleaned periodically.
Cleaning precautions should be exercised before starting with the process, like backing up important data, turning off and unplugging the laptop.
For removing accumulated dust, it is recommended to use a vacuum cleaner with small brush attachments, instead of compressed air.
To clean the stubborn grime that builds up due to oils, skin cells, and food dust, use a melamine sponge soaked in water, and try to avoid rubbing off any key characters.
For germ-killing, use some isopropyl alcohol and clean each key thoroughly with damp cotton swabs.
In case of spills, shut down and unplug the laptop, take out the battery, and let any liquid inside evaporate before turning it back on.
To clean up the surface of the keyboard and for deeper residue cleaning, the laptop keyboard might have to be removed completely, or some keys can be pry off.
Cleaning should be done periodically to keep the laptop in good condition and avoid unresponsiveness while using it.
Instead of self-cleaning, it's recommended to consult professionals for cleaning the laptop's keyboard.
Learn to clean the laptop regularly, and if the damage is severe, take it to the professionals or shop for a new one.