Our rig looked like the one on the photo after driving north from Ruskin FL for two hours. We stopped at a rest stop and they had a water spigot available. My Google Queen found a post suggesting baking soda (not powder) and water. Used my extendable brush and dipped in the water bucket then a sprinkled on some baking soda. Worked like a charm. Needed to rinse after using but the bugs and goo came off easy.