With the exception of having your charges reversed–or being dropped–there are really no other ways to request and have any charges of any nature expunged in the state of Montana. Outside of this reality is the systematic challenge of fighting the courts system for such, as even through rehabilitation, services, and treatment there is no offer—even for first time offenders—for not only expungement, but nor sealing of records and offenses. Should you obtain expungement of your criminal offenses or history you acquire the right to not disclose such offense existed or ever took place to future prospective employers.