Once the girls were finished playing with it we decided to see if we could make a volcano. I decided the cloud dough wouldn't hold up to being a volcano, so I took a small vase with baking soda in it and formed the cloud dough around it. Poured in the vinegar and to the girls surprise got a volcano. Other then clean up that was the end of our cloud dough. I would recommend doing this outside if possible because it gets very messy!