Using these mirror balls is easy. You can hang them with the included 5M fish wire either indoors or outdoors. For indoor use, hang them in your living room, hallway, or any place where you want to add a decorative touch. Outdoors, they look great in the garden, on the porch, or near a water feature. When hanging, make sure the hook or support is strong enough to hold the weight of the balls. As for maintenance, just use a soft cloth to wipe the balls gently. Avoid using abrasive cleaners as they can scratch the reflective surface. Keep them away from sharp objects to prevent damage. In case of bad weather like heavy storms, it's a good idea to bring the balls indoors to protect them from getting damaged.