I purchased a box of Logitch flat-ish keyboards and use them wherever I am. They are not all that good at keeping out the debris.
Due to not being able to eat wheat, my afternoon tea is taken with those Oats 'n Honey fingers, and tea is an excuse to Pprune.
One day I tipped the keyboard upside down, shook it, and got enough bits out to make tea.
So, industrial sized shopvac with round brush to finish the job. Looked good. Just one last sweep to make perfect. Buggah! Two keys gone. You have no idea how hard it is to find two tiny flat keys in nearly full shopvac bag.