I also us Nu-Finish, and am sold on it. We went to the rally in Goshen last year & I waxed it before we left. We left Goshen to work camp in Co. for the rest of the summer. I wasn't able to wash the rig the whole summer. When we got home, there was dirt & black streaks all over the camper, not to mention all the bugs on the front cap. When we got home & I washed it, the black streaks came off with just soap & water, no scrubbing! I hosed down the front cap to let the bugs re-hydrate, then hosed it off again...with just the garden hose, about 90% of the bugs came off, & the rest came off with little scrubbing.