From: Hollis, the Jamestown car guru
For everyone who can’t get their cars out. You might want to check under the hood for rodents taking up residence. Look in the air filter compartment, look for chewed wires in engine compartment, and if you can check behind glove box, also look for droppings on top of battery and other surfaces under hood. Chewed wires for engine can leave the car inoperable. You can try leaving moth-balls around and in vehicle. I really haven’t found any one really effective deterrent . Leaving the hood open and glove box open denies them that secluded space they like. With the hood open you might want to secure it with a bungy chord so the wind doesn’t flip it. Or maybe just prop it open a few inches and secure it.