Mildew's Staff is the staff that Mildew carries with him.
Sometime before the events of Dragons: Riders of Berk Mildew created his staff using wood and dragon teeth. It is assumed he made it while the Vikings were still at war with dragons, seeing as the staff has dragon's teeth on it.
Throughout Dragons: Riders of Berk, Mildew used his staff to walk or wave at people to make a point.
The staff is made of wood into the shape of a dragon's head at the top with dragon teeth dangling from below the head.
Hitting: Mildew uses, or attempts to use, his staff to hit people and dragons throughout the course of DreamWorks Dragons: The Series.