How do you clean out a coffee grinder?

Does Kief get you higher than Bud?

Instructions
  1. Put a 1/4 cup of rice in your blade grinder and grind for about a minute, or until it’s pulverized.
  2. Dump out the rice flour.
  3. Wipe out the grinder with a damp paper towel.
  4. Repeat weekly or whenever your grinder looks like it needs a good cleaning.