The hulls of the sunflower is edible, so it will not harm if it will be swallowed by your pet or a human. Even if swallowed more of the clumping litter, it will not hurt because “Naturally Non Allergic” thanks to the patented composition, cat litter will clump up only in cat urine, not react with others liquids as well as with saliva. Sunflower husk fabric litter is safe for kittens, cats prone to infections and convalescents after surgery.