Our Toyota Vios had been parked in our garage area for a while not being used as we use the Montero, but when we started to smell something 'ratty' around the car and when I lifted the bonnet we found a decaying rat which had decided to die on the engine block after eating the poison. When I tried to start the car nothing worked as the rats had chewed all the wires. So after a deeper look and the dashboard removed and everywhere examined, we finally had a result. Six more dead rats were found in the aircon ducts and in the engine bay and after the electrician had rewired the car we finally were able to start it again. Slowly the smell is going!!!!