Ever wonder why your cat won't play with most new "catnip" toys? Ever wonder why some are so cheap? Most catnip toys use inexpensive stems and stalks, the parts without aroma that should be thrown away. Dr. Noys Cats with an Attitude Toys are filled with only the finest catnip available on the market. And, as a bonus, you can open the patented "hidden" closure and refill the toy with Kong's premium catnip. Dr.Noys loves cats and created these safe, high-quality toys without elastic, strings, mylar or exposed bells.