Use carpet samples (they have a finished edge on them) to put a temporary carpet on the inside steps of your RV. Cut the sample to step-size, and use two-sided carpet tape to hold it down with the finished edge out (it looks better). Toss when dirty.

Weekly RV tips provided by Ronald Jones and Robert Lowe from their book, "All the Stuff You Need to Know About RVing." Ron and Sandy Jones write RV articles and books and present RV-related seminars.
USA: RVStuff.org 800-262-3060
Canada: RV-PartsPlus.com 877-266-5398