My pressure washer is powered by a 5 HP Honda engine and develops about 3500 psi. It removed the bulk of the foam overspray on the jacks and the wheel wells (the visible areas that I worked on), but the residual foam makes the surfaces a bit rough. Of course I would prefer it to be smooth so dirt is easier to clean off. Right now sponges and cloths catch on the surface, but I don't have the time or energy to do more. I didn't notice the overspray until I spent time close up cleaning and polishing the trailer, so I know it isn't a big deal. I can imagine how difficult it is for ETI to apply the spray on foam without getting at least a bit on adjacent areas. I guess I'm one of those guys who wants everything to sparkle and shine, at least with new acquisitions like our Escape. Maybe later this summer I will sand the affected jack surfaces down a bit and paint with rust paint.