Using these balloons is easy. First, get your air pump or helium tank ready. Since the balloons come flat, you can start inflating them. You can choose to use air for a non - floating display or helium if you want them to float. If you use helium, keep in mind they'll float for about 12 - 18 hours. For different events like weddings or birthday parties, you can hang them from the ceiling or use them for other hanging decor. As for maintenance, once the party is over, you can simply deflate the balloons. They're biodegradable, so you can dispose of them in an environmentally friendly way. Just remember, this listing only includes the balloons, so don't expect other decorations to come with them.