While walking through the factory, office workers have noticed rodent droppings and evidence of chewed cables. The electrical system within the factory has never been replaced or upgraded since Cover Up moved into the premises. A complete review and overhaul of the electrical system is being considered, as there are concerns about interruption to production. A pest control company will be contracted to regularly place rodent bait in$,$ and around, the factory.What advice would you give to the factory manager to help prevent future deterioration of the electrical system?

$(10)$

Note: You should support your answer, where applicable, using relevant information from the scenario.