i tried it today and it is a poor product, i usually use a mild clay but thought i would try it .. my van is a 2007 with 25000 miles on it and i wash and clay it about every 2 months so it is usually very clean. i did the liquid clay twice but still had to go back over with the clay bar. with the liquid clay you have to use a sponge and rub very hard. to me its more snake oil.