Made of PP, a non-toxic and odorless high-density linear polymer. Harmless to animals and humans. Each slot has an individual transparent lid that protects the snack from dust and prevents the smell of food from disappearing. These catnip cat toys have a self-adhesive base and the balls are individually removable, allowing them to be attached to the bed, sofa, door, wall, window or any other place, where cats can lick them and have fun. When placed on the toy, the catnip ball rotates with your cat's tongue and does not fall off. Catnip chew toys are specially designed for cats. The chemicals released by catnip boost your cat's mood. The chemicals released by catnip stimulate the cat's pheromones, causing the cat to hallucinate, excite it, and draw it closer to its owner. This product does not contain catnip