Petlinks Lil' Critters set of 2 adorable mice that will satisfy your cat's excitement and hunting needs in a small, lightweight and catnip filled size. Most cats respond to catnip with a burst of energetic activity followed by a perfectly calm mellow period. Our catnip is produced without chemicals or pesticides and is grown on our own catnip farms. Our mice are made of soft plush fabric with twine arms and lets, cats love the texture changes and the floppy feel of the twine.