Just wanted to put this one out there. DO NOT LEAVE BIRD CRAP SITTING ON YOUR M!
I've read that bird crap has some kind of acid that isn't really good on paint.
This morning I noticed a few spots of it on my E92 with carbon fiber roof. I left it there for a few hours. After I washed the car, I noticed a few spots where the crap was. Looks like dried water stained, though I spraying it with detailing spay but didn't come out.
I'm guessing I have to use compound, polish and then wax on this one.
Has anyone else experienced this one?