Abstract: Disclosed is a pliable bag comprised of a mammal pest barrier resistant to mammal pest passage therethrough. The bag is sized and shaped to receive a ground vehicle, such as an automobile, a truck, a recreational vehicle, farming equipment, construction equipment or the like. Included is establishing access to an interior surface of the bag; by way of this access, moving the ground vehicle into the bag to rest on the interior surface thereof; and while the ground vehicle is resting on the interior surface, closing the bag to envelop the ground vehicle inside the bag and isolate the ground vehicle from mammal pests outside of the bag. In one form, the closure of the bag is provided with a type of zipper.