The Rodent Terminator will need to be emptied after each kill. Simply dump them out from the end when the light turns yellow or red which indicates a dirty plate.
The description for the Rodent Terminator lists that it can be used for rats, chipmunks, mice, squirrels, mongoose. It does specify species but would be best for smaller squirrels than any larger ones.
If the red indicator lights on the Rodent Terminator are blinking the trap is signaling that a rodent has been trapped.