I havent had clear weather and warm temps to wash my Black Prius, so this last weekend I got the time and weather perfect. I soaked the car with CG Citrus and shine, several rinses and a wash with CGCS a good clean mitt. Rinse and dry with the waffle towels. going great till I look at the towel, full of dirt! The car looked very clean before drying and no signs of another layer of dirt and grime. sucks, now it becomes time to get the power tools out and do a complete polish out. Oh well it has been a year...