Walnut Shell

Walnut shell litter is available in both clumping and non-clumping varieties. Walnut shell litter is usually lightweight.


  • Generally good for odor control
  • Marketed as dust free
  • Possibly compostable


  • Should be avoided by anyone with strong walnut allergies
  • Can be incredibly dusty
  • Expensive
  • Can aggravate asthma/allergies in cats and humans
  • Ingesting oils from the litter can cause allergic reactions
  • Dark color
    • makes tracked litter obvious on light floors
    • makes it hard to see when box needs scooping
  • Molds easily in storage or in the box
  • Some people have said this kind of litter stained their cat’s toes or the fur on their feet