This experiment is not for the faint of heart. This chemical reaction has a serious kick. I would only recommend parents conducting this experiment and kids watching from a safe distance. Steve Spangler has a great tutorial. I would try hard not to make the traditional hole on the top of the pumpkin. It tends to blow out and softens the effect. I would also follow Steve Spangler’s instructions carefully. This experiment is serious; use extreme caution when conduction this experiment.