No Dogs allowed. Catnip Filled. Every toy play shape pattern fills a need. Every toy play swat pattern fills a need Every toy play hunt pattern fills a need. Hartz Mini Mice are the perfect size for indoor swatting and chasing, helping to keep your cat active. Often called nature's perfect predators, cats are natural hunters with highly developed hunting skills. Toys stimulating this instinct connect cats to their natural role as predators, creating a sense of satisfaction. All new materials Reg. No OH 72989 (CN) content plastic skeleton catnip.