Good morning, how are you? I wanted to let you know this is a review for Shady Cat Social Club who sent me Silvervine Powder, Catnap & Valerian, Leaf & Flower, Silvervine Powder in exchange for this review. Silvervine Powder Silvervine – The strangest product we carry but honestly one of the most popular items cats just can’t get enough of! Silvervine is a small Fruit grown in Asia (cousin to the Kiwi fruit! How odd!) that is the Eastern equivalent to Catnip. The Powder is noted in various studies to have a higher effectiveness rate on Cats than Catnip anywhere from 75-90%, whereas Catnip’s effectiveness rate is somewhere between…