Rats did over nine billion American dollars worth of damage to property during a single year in north America alone. This is according to a reputable paper. Factories are particularly prone to damage by rats because they chew wires and hydraulic lines leading. This leads to high financial costs. They are also very difficult to rat-proof as a large building could have many hundreds, if not thousands of holes to block. Miss one and a rat is bound to find it.
Some of the holes may be inaccessible, making it impossible to block all of them. It is also very expensive to try as it can be time-consuming. Blockage should be performed with sand and cement or sheet metal as rats would be unable to chew through these. It is clear that if you only miss one or two holes then the rats are sure to find them. You could end up spending a large amount of time and money in finding and blocking the holes. You might find that the problem continues regardless because rodents are intelligent. They are able to find their way through a maze having only been shown the route once. Using their keen sense of smell and instincts they will find a way in, if there is one.
Your factory may not be insured against rat damage so it is definitely worth having a look at this fascinating new anti-rat solution. It uses a rat deterrent floor to keep rats away. Remember that the costs aren't just those directly related to repairing the damage. There's the equipment downtime also.
If your delivery van is damaged by rodents you won't be able to meet your orders for as long as it takes to get it repaired. Stats from Hammer Technologies show that the average cost of repairs to a car from rodent damage is in the region of four hundred pounds. The upper end was in the region of seven thousand.
A rat could put a factory line robot, important control computer, lathe, CNC machine or other assembly line machine out of action. The costs could be significant and you may not be insured against them.