Why did we design this product? We have made some changes to the product as follows Adjust the length of the rope Adjust the length of the elastic rope, so that one of the rats off the ground height can let the cat play freely, when the toy mouse after a long time after the cat to tear broken, you can adjust the length of the rope for a mouse to continue to play with the cat. The improved mouse First of all, we added catnip to the mice. Catnip can increase the attraction to cats so that they can experience the toy better. Our mice use encrypted fabric sewn to make the mice more sturdy and durable! Thicker rope We will be easy to break the rope to improve the thicker 0.2in elastic rope, after testing the rope can withstand at least 40 pounds of weight does not break, thicker design can ensure that the cat can not easily bite off Cats need mental stimulation from playing to avoid boredom and to satisfy their hunting instincts. Combine rope and a plush mouse to make a great cat toy that's perfect for cat chasing! Activate your cat's natural hunting instincts to chase. Make them run and jump like wild animals. They are happy and released! Good for health, especially for indoor cats. Important Tips When you get the product, please adjust the length of the rope according to your use scenario so that one of the mice is placed at a height where the cat can play. We think the cat will only play with one mouse at the same time, the reason we have two mice is: when the cat after a long time tearing damage one of the mice, you can change the other mouse to continue to play, thus extending the life of the cat toy.