Abstract: A dispenser for compound-containing containers includes a receiving chamber for a container; at least one push rod displaceable relative to the receiving chamber; a motor for moving the at least one push rod; a control unit for controlling the motor; a main switch for activating the motor; and an operation selection switch for switching between different operation modes and having a discard position. The control twit is configured to dispense a predetermined discard amount of the compound when the operation selection switch is set to the discard position and the main switch is triggered. The dispenser provides an automated discard function, which helps the user to discard the correct amount of compound before starting normal applications. With the dispenser, a procedure of initializing a compound-containing container is improved, to increase the security of the application.