Rats nests and Vehicle storage

Hi All

Just came back from o/s and had veh (100 series)in storage for a year inBrisbane.

Found a Rat had made nest in A/c intake and in Fan housing (probably using as as an exercise wheel in his landcruiser penthouse)
12 months of urine and droppings to clean out, and still getting rid of the smell.

Going back into storage for annother 12 months and dont want a repeat, any advice how to keep them out ??.
Also Mould in veh most surfaces, had a water adsorber packet but still a thin layer of mould
All windows fully closed.
Has a car cover and is in a car-port

Any advice appreciated

Thanks

Harrow