We just got back from a trip through bug land and I decided to try a different approach on removing them. A guy I used to work with told me that truckers use a solution of baking soda and water,so I ...
No touch carwashes use a method of ph changes breaking the bond of soil to a vehicle. Large particles can be dislodged by impingement with high velocity water, but they could not remove road film that way because it did not have sufficient particle size to give the water something to push against. Ph shifting from acidic to alkalia broke the bond to allow the water to remove the soil. Your baking soda is doing some of the same thing.