I'm a drive it and then clean it sort of person.
I must admit that I have recently cleaned off 4,000 km worth of Spanish, Portuguese, and French bugs, plus a few Italian. Big mistake! I should have cleaned them off while they were still fresh. First I washed the car, then attacked the bug residue with a special cleaner then I rinsed off the previously bug spattered area and gave it all a good wax and shine.
Phew! Makes me tired just to relate the story.