Rats are one of the largest carriers of potential diseases – and notoriously hard to get rid of. A property with a severe infestation can take up to three months to clear – so it’s crucial you do all you can to keep them out!Rats are one of the largest carriers of potential diseases – and notoriously hard to get rid of. A property with a severe infestation can take up to three months to clear – so it’s crucial you do all you can to keep them out!