I`m still using some leftover CG bug wash that I bought a while ago or sometimes P21S Total Auto Wash. I`ve heard both 3D Bug Remover and Poorboy`s Bug Squash are great products.
Bug squash. Try to get to them the same day you find them, it makes everything much easier. If you`re going on a road trip on a freeway, you know you`re going to acquire a good deal of them.