There are several reasons that rats cause so much damage to our property. Here are a few of them.
Food. Often the rats are looking for food when they chew your stuff. They may be looking for a way into a feed bin or other storage container; if they get in they can ruin your stock. Spoilage can occur due to rainwater getting in to the bin or the rats using the containers as a toilet or nesting in them.
Warmth and shelter. Rats may find their way into spaces in your walls and floor by chewing skirtings and boards to make a passage. Having got into your walls it can be very hard to get them out, however this should be imperative because if a rat dies in the wall or floor it will rot in there, attracting flies and creating a terrible smell.
Water. Rats can survive even longer than a camel without water but they still need to consume it regularly to survive. This leads to them damaging your property in their search. Chewed pipes, buckets and other water containers are a sign of thirsty rats. Stop dripping taps and dry up any water sources that might be providing for them.
If you are having difficulty with rats try Hammer Technologies' new rat repellent mat, it's a revolutionary way of controlling the rats in your area and keeping them away from your stuff. It makes good use of fully patent pending tech to keep your kit unchewed. The alternatives are bleak; a good trapping and repellent program can keep 99% of rats away but you've only got to miss one for the damage to occur. You can try filling all the gaps in the walls, skirtings and roof but you can be sure that if you leave a hole they will definitely find it. Don't waste your time; get some rat repellent flooring.