Yes, it can be erupted multiple times. However, the landscape materials on the exterior of the volcano will eventually break down from the moisture of the eruption mixture.
Here's how to make additional Eruption Mixture 1. Mix 1 drop yellow and 1 drop red food coloring with 2 fluid ounces of vinegar.2. Pour 2 teaspoons baking soda into Volcano Tube.3. Pour vinegar mixture into Volcano Tube and watch it erupt!