How can I control the moisture inside my smoker?

You can control the moisture in you smoker by the vent in the top of the unit. If the vent is closed you will have more moisture in your unit than you would if the vent was open. Please keep in mind not to close the vent in the top all the way when smoke is running. Ex: When doing beef jerky you want to dry the meat so keep the vent all the way open the whole time.