Sometimes Pam (the non-stick cooking spray) will remove adhesive. Just spray it on, let it sit a few minutes and wipe off the sticky stuff with a cloth - don't try paper towels - it will make a mess of little shreds. Then clean the oily residue and little rolled up sticky bits off with a mild soapy solution (like Dawn in some warm water). I have used Pam to remove price tags from picture frames and sunglasses, and also for the last bit of sticky stuff when I removed a wallpaper border in my bathroom. Just please be careful! I don't want to be the reason you had to spend the weekend re-wallpapering your RV! The wallpaper I used it on was bathroom wallpaper - more of a vinyl/wipe clean stuff. I think RV wallpaper is a little more papery. Try it in a hidden corner first (or inside the closet) to make sure it doesn't discolor your walls. Good luck!