I'm going to use M Bags as well. I bought commercial grade saran wrap from Sam's, under $8. Then I wrapped each book - was easy because the plastic wrap had a cutter build on the box. Then I loaded a box with books.
By living in the country, I can tell you that rats / mice will eat through anything, including industrial grade plastic, if they are determined enough. I don't think the foil will deter them.
~BEG