I read about using orange seeds or Minute rice to clean the grinder. I think taking it apart would be better for actually cleaning out the old coffee oils and gunk. My grinder seems to clog a bit and stop grinding the right amount of coffee beans each time. So, I was looking at ways to clean it. A little weekend project.
So you're already on board with the idea that your grinder is critical to making good coffee at home. But...do you maintain it? Crusty, crispy, bean-crumb-filled, coffee-oil soaked grinders can suck the joy out of your brew. A little diligence and regular care will keep things up to snuff—the first step is admitting you have a problem. Source: 4 Quick Ways to Maintain Your Coffee Grinder | Serious Eats