A man walking through a wall is a miracle. A man both walking and not walking through a wall at the same time and in the same respect is a contradiction. God can perform miracles but not contradictions - not because his power is limited, but because contradictions are meaningless.
Outside openings to attics, crawl spaces and similar locations should be sealed off so rats and squirrels cant get into houses, garages or other structures. Pet owners should make an extra effort to keep their domestic animals free of fleas and avoid leaving out pet food where it can attract wild animals.