We all know that our cats can cause quite a mess sometimes. The thing we love most about our Sand Filled Play Balls by Cat Toys is that even when they are sprawled out all over the floor, they are fashioned in a way that doesn't look messy! Each ball in this 4 pack has a small amount of sand inside giving it a unique rustling sound that is sure to mobilize your cat's curiosity! These play balls are sure to keep your sweet little babes busy while you rest up after work or relax on a day that you're just not feeling too well. Perfect beginner toys for new born kittens too!