If you don’t have any water restrictions, grab two screened buckets—one for the rinse and one for the suds. After each pass with a microfiber wash mitt, rinse it to trap debris that can scratch the paint. The second trick to this is to use a dedicated car wash soap instead of dish soap. Detergents you find in the kitchen strip the wax off the car and begin the oxidation process. If you drop the wash mitt, give it to the dog.