Prior to leaving on our trip I purchased a product called Rejex based on a thread over on irv2.
The claims were that it keeps bugs from sticking to your paint and windshield .
So I purchased a bottle on Amazon and did my windshield , the entire nose of my Vegas and the mirrors.
I then drove from North Carolina to Florida and accumulated the usual amount of bug guts on the front of the RV which also got nicely baked on by the 90 degree temps down here.
We just had a thunderstorm here at WDW and I went outside to find that most of the bug guts had washed off the above listed surfaces and the rest came off with a swipe of the sponge on the back of my squeegy .
It is amazing stuff and very easy to apply.