Mad Cat Cactus Kicker is a large plush sized cactus ready for the wrestling and kicking. Made from polyester with PP stuffing, crinkle material and filled with a combination of premium catnip and silvervine. Silvervine is a vine plant from eastern Asia that is known not only for its medicinal properties, but it also contains two compounds that attract cats similar to catnip with the same effects. Silvervine is also ideal to offer to your cat if they don't get an impact from catnip.