Catnip balls are made of pure natural plant extracts, no chemical additives contained. Rest assured this toy is no harm to your favorite kitty. Includes 4 different flavors: catnip, silvervine, fruit of silvervine and cat energy ball that conspire to arouse your cat’s interest to lick and play The cat toy can easily stick to the wall or other surfaces with strong viscous force, no falling off when your kitten licks and plays. The 4 balls are 360° rotatable when being licked Catmint and silvervine are effective attractants to get lounging cats up and moving. The extra cat energy ball promotes cat's metabolism and stimulates growth Catnip could effectively reduce cat’s dental plaque and tartar, freshen breath and improve oral health for your kittens According to our diligent experiments, we found that some kittens under 3 month old might not be interested.