I used to do some contract work for the local Porsche/Volvo dealer years ago and the make ready guys back there would bring a car back to the wash bay, pick up a mitt from the GROUND, rinse it, wash the car, throw the wash mitt back on the ground and then proceed to pick up a chamois from.....you guessed it, the GROUND, rinse it and then dry the car.
The chamois would then end up again on the ground. I saw this one guy literally "spit" on the windows and then wipe it dry:shocked
Disgusting!
Anthony