To answer my own question now, Scratch Remover works to get bug 'stains' off.
I had several areas on the hood(right above the grill) that i scrubbed and scrubbed w/no success. Then i tried some Scratch Remover that i already had and it took them off instantly. Its pretty much like a wax, but i guess it acts as a cleaner too. You rub it on, let it dry to a haze, then wipe off just as you would if you were waxing. Its in a small yellow bottle, not sure of the brand, but it says 'Scratch Remover' in big letters on it. Cheers
