Material: Made of environmentally friendly PP, non-toxic, tasteless high-density linear polymer. Harmless to animals and humans. Dust cover: Each position has a separate transparent cover, which can protect the snacks from dust and prevent the smell of food from disappearing. High flexibility: The bases of these catnip cat toys are self-adhesive, the balls are removable separately, so you can stick them on the bed, sofa, door, wall, window or other places, very suitable for cats to lick and play. Rotating Design: Place the catnip ball on the toy, the catnip ball will rotate with the cat’s tongue and will not fall. Catnip chew toys are specially designed for cats to play with. Regulate emotions The chemicals released by catnip stimulate the cat’s pheromone, which makes that the cat hallucinates, gets excited and gets closer to the owner. This product does not contain catnip!