An automatic discharge device includes a housing having a recess for receipt of the body of a container and a groove configured to receive a portion of a valve stem of the container. The recess includes a tapered upper end configured to fit a neck of the container. Further, a first compartment for receipt of a first battery and a second compartment for receipt of a second battery are provided. An actuator is disposed proximate the groove, which defines lateral sidewalls and a rear sidewall and has an open forward end to receive the valve stem.