Cleaning under keyboard

Whats a good way to clean out stuff from under the keyboard. On my old cheapo HP i use to just pop out the keys, I'm afraid to touch this one like that though hahah.

EDIT// MBP 15in before the update.

A laptop vacuum. Or compressed air.

Careful if you use compressed air on it, try to avoid the speakers on the side. I tried to get stuff out from those holes and made it worse by getting a rattling sound in the left speaker now. :-/