Each ball includes a bell that jingles to stimulate your cat’s natural hunting instincts and encourage active play indoors. - Durable Plastic for Safe, Long-Lasting Play- Crafted from sturdy, non-toxic plastic, these cat ball toys are safe for kittens and adult cats alike.
If your cat enjoys balls, it will love these. It wall have 4 of them to scatter around. They do have a bell inside of them that can become noisy. If you're easily bothered by constant bells jingling, do not buy these.