For the fifth time in a row, we have just taken delivery of a new 'van (Challenger 540) with a super-sticky sticker on the washroom sink - others have had them on the shower cubicle as well. Previous attempts at removing this gunk has usually resulted in a scuffed or marked surface - until now!! In a fit of desperation, I tried using Turtle Wax Bug and Tar Remover (used on the car bumpers etc) - it works, AND does nothing to the surface of the sink!!!!!!!!!!