>>528403084
Grab a pic of your keyboard
Unplug
Remove the keycaps and put them in a strainer. Leave strainer in the sink with some hot water & soap.
Vacuum keyboard
Wet the brush with soapy water, scrub, shake loose the debris in the water.
Finish up with wet qtips.
Give the caps in strainer a twirl, drain it, rinse out any soap.
Clean each cap with a towel and put back according to your layout.

If you have a membrane keyboard, dunk that membrane in the sink too.