Instincts by SmartyKat® Tricky Tea™ Set of 3 release your cat’s inner instincts with lightweight floppy toy teabags that are 100% filled with HappyNip® catnip and silvervine. HappyNip® is our proprietary blend of pure natural catnip and silvervine, an ideal alternative for finicky felines who need a little extra excitement. Tricky Tea™ sparks the fun and gives your cat a satisfying hunt with safer and kinder “prey.”