Remedies that backfire
Mothballs contain naphthalene or paradichlorobenzene, pesticides labeled for clothes moths in closed containers, not wildlife in attics. The vapors drift into the living space.
Poison is a terrible idea for squirrels: the animal dies in a wall or ceiling and the smell lasts for weeks.
DIY trapping puts you face to face with a frightened animal. Raccoons bite and can carry rabies. New Jersey has rules on trapping and releasing wildlife, and a mother trapped and removed leaves babies behind.
Sealing too early traps the animal, which then chews a new hole, sometimes into a bedroom or closet.