This is a test of commonsense. Complete the next sentence:

How to wash an rv
Climb onto your roof using a ladder so you can scrub it down.
You can clean your roof the easiest by getting on top of it. Use the ladder attached to your rv if you have one, or set up a ladder next to the back of your rv and climb on top.
Be careful when you climb the ladder! Bring your cleaning supplies with you, or have a friend hand them to you after you get on top. Clean with a pre-wash and non-abrasive cleaner if you have a metal rv.