SmartyKat Instincts Mouser Mayhem HappyNip Silvervine & Catnip Compressed Cat Toy, 2-pack; Treat your furbaby to su-purr fun playtime with the Instincts by SmartyKat Mouser Mayhem HappyNip Silvervine & Catnip Compressed Cat Toy. These mice-shaped toys feature dangling jute cord tails for carrying. They're purr-fect for swatting and pouncing. These toys are filled with silvervine and catnip to entice your little hunter and make for extra frisky playtime. Encourages swatting and pouncing. All the fun of loose catnip and silvervine with less mess. Durable, natural knotted jute cord tails for carrying. Dangle by the jute tail for your furbaby to swat. Appeals to your cat's hunting instincts.