Petstages catnip chew Mice Cat Toy The Catnip Chew Mice are designed to clean teeth while your cat chews and plays. Helps remove tartar and improve dental health. Unique netted shell won't unravel when chewed. Floss like action when chewing helps clean teeth. Filled with catnip to attract kitty. Fun to carry and bat. Sold in pairs for twice the fun.