Using these floral foam balls is easy. First, soak them in water until they're completely saturated. Then, cut the foam to the size you need to fit your container. After that, you can add your real, dried, or artificial flowers. These balls are great for both indoor and outdoor use, and they're perfect for holding silk flower stems, heavy - stemmed naturals, and floral picks. Remember, the item only comes with the Styrofoam balls, so you'll need to supply your own decorations. To keep them in good condition, store them in a dry place when not in use.