Ive had some carnage on mine. I had dozens of carpenter bees flying around my porch a month or so back. They would fly up to my quad and attack the props and man they would hit a prop and go sailing across the yard.
Yeah, I use a general purpose cleaner "Formula 409" and paper towels to clean my Phantom 4 and the props. Works great making all look new again.
Jim
WA5TEF