I think our west coast bugs must be somehow tougher or more resistant. I’ve tried Rejex, carnuba wax, silicone based waxes, and various suggested removers including hydrogen peroxide, bug-off, drier sheets, etc- about everything suggested. Nothing works very well.
My best luck has been with Mop-and-Glow floor wax, Mr Clean erasers, and lots of elbow grease...
2012 Solera "S"
Calif SF Bay Area