The HyperNip line from Petlinks is a unique mixture of Catnip and Silvervine, which is much more potent yet pure as it can be. Silvervine a wild growing herb foraged in the mountains of Japan and China has a strong natural effect on cats even those who don't respond to catnip. After extensive testing to find the perfect blend, HyperNip is the ideal alternative for finicky felines who need extra excitement.
Cassandra's review- So here is just one of my fur babies having the time of her life in a fun-filled exercise tizzy. Catnip with the added silvervine was a great choice for petlinks because if you have a cat that responds well to nip, they are going to love the whole system. I watched my pets play for over an hour until everyone wanted to eat and sleep and I will also mention that the outside cats will get to keep everything except for the 3n1 down scratcher blanket because as you can see my top reviewer loves it.