Did someone say brunch? Your cat will love this brunch classic two-pack, filled with an irresistible custom blend of catnip and silvervine for twice the cat attractants, plus playful crinkle, this is one menu item your cat won't say no to. Silvervine is an all-natural catnip alternative that cats love, it elicits a similar reaction to catnip, and works for many cats who normally are not affected by catnip.