When you need a convenient source of fog to help visualize convention or an airflow experiment, the last thing you need to worry about is setting off the smoke alarm! This Wizard Stick produces a stream of safe, condensed vapor droplets and contains no actual solid 'smoke' particles to set off the alarm or cause injury. Using the same special effects technology found in Hollywood films, the Wizard Stick is safe, non-toxic, easy to use and cost effective. Each Wizard Stick includes 3oz. of fluid (fluid refills available). Requires 6 AA batteries (not included). Read more on our Blog!