Q: Are bird droppings bad for my car’s paint/finish?
A: Yes – some more so than others. Bid droppings are acetic. They can eat all the way through the paint and that allows the metal to start rusting — if left on the paint long enough. You don’t have to clean it off immediately, but you should not allow it to sit on the paint for very long. Three days would be too long. To remove the bird droppings, just a water flush is all that’s needed – enough to ensure the droppings are rinsed off. The longer the droppings sit, the harder it is to remove them. If it sits too long, you should use soap and water to get that discoloring residue off. If it’s been long enough, then wax may be called for
