Have you had your car freshly detailed? Spent all weekend polishing your pride and joy? But its going to the dealership on Monday for a service.......which includes their gritty sponge courtesy wash which will undo all your hard work in a matter of minutes!
Never fear, hang one of these bad boys from your rear view mirror before handing over the keys and they should get the hint that you don't want the gritty service wash and would like to keep your paintwork in one piece.
Thank me later.