I drive on New England roads and get salt and sand all over my car. I prefer using the two bucket method, but its sometimes too cold. I have used ONR with warm water in the garage before and that works pretty well. I have a bottle of Eco-Smart and it doesn't seems to do the job, dirt is left on the car and it doesn't "flash" in the cold. Would you guys use a waterless wash on your car for these conditions?