i had bird crap on my car, its a lease. my friend told me the best way to clean it off is to use soap and a sponge... i took the green side of one of those yellow/green sponges in my kitchen..
i started seeing weird whitish lines from when i was scrubbing. I thought maybe it was just more bird poop, but i started seeing silver lines..
now i cant get them to go away and the silver lines are getting bigger.
LMK