Hartz Just for Cats Midnight Crazies Cat Toy, 7 Count

When I bought this I received two packages for the price of one! They shipped next day and I had them the day after that. When I opened the package my cat started playing with them as I freed each one from the package, she had me laughing so hard, even funnier when she found the second package on the table with balls still attached. She tapped them it jingled, she smacked them rapidly they jingled even more, she knocked them around the kitchen table & on to the floor batting the whole package around as I laughed harder she hopped and ran off. We have several types of balls all over the house, however we found this is the only type she will play with, she will even walk around with them in her mouth and either drop them at our feet, or down the stairs for a game of fetch, she also likes to leave surprises shoes with these balls only. I have no idea why it is just these. We have bird cage looking ones, ones that look like these but have points on the sides, furry ones, some that look like a ball of string, some that light up when rolled, she does not play with them. Just these balls and the one that is a ball of Catnip, almost forgot that one, great time for all with these balls.