geez most of you must get you jollies by killing life for no reason.........
trap and relocate, seal up holes.
its really your own fault for having a insecure building.
d con might leave home stinking for months, if animal dies in wall.
and why is the OP report he sealed off the attic entrance with concrete and wood?
its a good idea to check places like attics yearly, for roof leaks and other hazards