tompoland Yes, I remove the burr carriers, leaving the burrs on the carriers….if you do have to remove the burr from a carrier, it’s usually the bottom one on many makes.
I then vacuum and brush out the grinder chamber, wiping with a clean dry Microfibre cloth…if it smells good, I’m happy. You can use some 90%+ Isopropyl alcohol to help with this if you want, although coffee oils are not removed fantastically by organic solvents like alcohol.
With the burrs, in or out of the carriers, I brush them with a stiffish clean toothbrush bought for the purpose (no multicolours or rubber gum massaging bits, just a bog standard medium to firm toothbrush cheaper the better..You can optionally use a bit of isopropyl alcohol on the burrs. and brush.
When clean reassemble and grind yourself a double shot, perhaps 2 straight away.