How about a bucket of hot water and a clean white towel. A little elbow grease and your golden.
Tarminator.. Tarminator quickly and easily removes tar, sap, bugs, grease and asphalt from auto exteriors.
My favorite product for working on bug marks is p21s Total Auto Wash. It's pH-neutral so there is no fear of damage to either paint, vinyl surfaces or metal. Imho, there is nothing that touches p21s TAW.
Wait until the paint cools down and rehydrate the bug guts with water. Soak it or lay a wet microfibre towel on it until it gets soft. It should come off without much pressure. Remove them quickly to prevent them from burning in to the film. There is no need to use chemicals the vast majority of the time.
I keep available a bucket filled half way with water, some car soap and mitt. When I pull in my garage I grab the already filled bucket with mitt and give a quick wipe down. Then I hit it with a quick detailer. Take all of 5 minutes, (if that). Somtimes I will spray a diluted meguirs APC on let it soak, go in the house take care of whatever then do the procedure above. Rejex is excellent too.
I've never had any problems getting bugs off the car, but what about bird poop? That's some agressive s..! Literally!
Bird poop that dries can permanently mark your paint. Get it off as soon as possible. Try Windex. It worked for me just yesterday. Let it soak in. Works on bugs as well.
I'm surprised no one has mentioned this, but I just buy a large container of cheap waterless car wash liquid (cheaper than quick detailer but similar I believe), and when I do a traditional wash on the cars once a month I spray a ton of this stuff on the front of the car where bugs are. Let it sit for about 3-4 minutes and then the bugs hose completely off, even ones that have been there a month. No scrubbing and no harsh wax-removing chemicals. To be clear I don't use waterless car wash as intended, only as a bug softener.
I douse the affected area with water. Let sit for a few minutes (assuming it ain't 8 million degrees out!). Then wipe with a clean microfiber cloth. That usually gets most bug goo off, especially if you do, as Jason suggested, it right after a drive. Then quick detailer, I use Meguiar's, for stubborn spots. Our Cali has PPF, so it's relatively easy. T