Seems to me this stuff needs to be used on a car with a good coat of wax already. Plus I noticed the back end of my truck was in the direct sunlight, so the only spots I had to get rid of myself were on the back left panel of the bed. The sun bakes the soap pretty quick. Otherwise, the rest of the truck came out amazing. You have to do the job pretty quick, and with the auto-dry position (last step), you have to get up real close with the gun to the truck. If you do it closely, back and forth, top to bottom, the product does its job. Quick question for the guys who had a problem with it: Was the product new that you were using, or was it borrowed? I know for a fact that the filter is said to be only good for 3 washes, but I've seen it lose its effect by the second to third wash.