Using these Mud Pie Halloween wind - up toys is super easy. Just wind up the toy, place it on a flat surface, and watch it go! It's a great way to add some Halloween spirit to playtime. As for the eye - style toy, it glows in the dark. Keep it in a well - lit area during the day so it can absorb light and glow brightly at night. When it comes to age, these toys are suitable for kids 3 and up, but adult supervision is always a good idea to prevent any small parts from being swallowed. To maintain these toys, keep them clean and dry. Avoid getting them wet as this may damage the internal mechanism. If the toy stops working, check to make sure it's wound up properly. Have a great time playing with these spooky wind - up toys!