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 playPractical 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 lickedKeep 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