Renting out an RV to a friend as temporary living quarters is an excellent way to help someone get back on their feet. However, this benefit can be sabotaged if mice invade the vehicle. Thankfully, covered storage can help protect against this annoying danger. Why Mice Invade RVs First of all, it is essential for you to understand why mice invade RV areas in the first place. They are usually trying to avoid winter weather and searching for sources of food.