Unlike walls, cars can be scraped clean with a shovel when they are stained with bird droppings, but the paint is much more expensive. If it is new bird droppings, it can be wiped off directly with a wet paper towel or rag. If the bird droppings are not cleaned for a long time, they will leave traces that are difficult to remove, and may even take away a piece of paint directly, so don't dig hard for the tightly stuck bird droppings.