We would not recommend using the Victor M2524 Electronic Mouse Trap outdoors unless it is in a covered area to protect it from the elements. You could potentially make a homemade box to put the trap in that would protect it from the elements like a plastic shoe storage box with the lid on and cutting holes on the sides for access to the entry point of the trap for the mice.
Electronic Mouse Trap - Victor M2524 should be emptied after each kill otherwise it will not be able to kill other mice and for safety reasons.
You may hear a very slight sound when the Electronic Mouse Trap - Victor M2524 catches a mouse, but otherwise the trap is silent and would be safe to use around any animals that are not small enough to fit into it.