100% Natural and Non-toxic: the 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, the fruit of silvervine and "cat energy ball" that conspire to arouse your cats interest to lick and play Practical Design: 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 Keep Cats Entertained: Catmint and silvervine are effective attractants to get lounging cats up and moving. The cat energy ball promotes cat's metabolism and stimulates growth Teeth Cleaning: catnip could effectively reduce cats dental plaque and tartar, freshen breath and improve oral health for your kittens Caution: According to our diligent experiments, we found that some kittens under 3 month old might not be interested. If your cat turns out not interested, please contact our customer service and we'll do anything possible to fix it.