I drove to Lakeland from Plant City to get 3m Crystalline tint put on my 370Z. The trip home I had probably 30 of those nasty thing to clean and I found out how hard it is to make sure their guts are washed off of pearl white.
I use Rain-X Foaming Car Wash Concentrate. It's cheap, 100 oz for about $8.00 and works as good as any car wash I've ever used. I use in my foam gun and wash water.