How come my car never looks as clean when I wash at home with my pressure washer?

Chemistry. When you use hot water that has been softened along with top-of-the line soap and professional equipment, you simply get a better spot-free wash. To ensure you get the best wash we also monitor our soap quality on a daily basis and adjust the soap to match your cleaning needs; i.e. we adjust for salt, sun, mud, sand, etc.