How To Clean Dust Under Mac Keyboard. Though you state you want to avoid removing keycaps some may may be. If you clean your MacBook on regular basis It can help you to keep your workspace hygenic by reducing the chances of infection.

Wipe it down. Wet Ones Plus 70 Alcohol Hand Sanitizer Wipes. Ive discovered by the hard way that the keys dont pop out and pop back in like most standard keyboards.
Then spray some compressed air left to right.
Ive discovered by the hard way that the keys dont pop out and pop back in like most standard keyboards. First turn the keyboard at a 75 degree angle so it is not quite vertical. The same but much more gently for a laptop that is shut down. Then use a damp soft lint-free cloth to clean the computers exterior.

