Multiple-can aerosol puncturing systems that are capable of puncturing multiple aerosol cans in a single operation are disclosed. A can holder with multiple chambers and a movable lid are used to contain the aerosol cans. A vertically movable actuation plate with multiple hollow puncturing pins is raised toward the can holder to puncture the lids of the aerosol cans. The heights of the puncturing pins may be staggered in order to puncture the lids sequentially during the same draining operation.