Hello, to clean the keyboard without disassembling it, go over the joints with a flannel cloth, damp cloth or paper towel. You can blow out the keyboard from the inside with a can of compressed air or a cold hair dryer. Don't forget to take a picture of the keyboard before taking it apart. Rinse the keys with plain water, soapy water or an antiseptic. By the way, Spilled Water on the Laptop Keyboard. What to Do and How to Fix It? has a detailed guide on how to properly clean your keyboard.