The Mad Cat® Sasquatch Catnip & Silvervine Cat Toy Twin Pack is an adorable plush-filled sasquatch-shaped cat toy with a unique blend of premium catnip and silvervine that's maximum potency, pure, and pesticide free. 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.�Some cats LOVE catnip, but not all cats are affected by it. To solve this problem we developed our own unique blend of catnip and silvervine. Silvervine is a non-toxic, all-natural catnip alternative that many cats prefer. This potent stimulant elicits a similar reaction to catnip and is both safe and fun.