Coffee is an organic material filled with oils that, over time, will form layers of residue on knives and containers. So a little cleaning every now and then is a good idea, and it's not as difficult as you might think.
All you need to clean your grinder is a cup of oatmeal! Watch the video below to see what to do with it.
For more thorough cleaning, you can use a brush to remove residue from the blades and the coffee container can be washed with water. An even more thorough wash will require a suitable grinder cleaner.
After cleaning, you can take a well-deserved coffee break!