I recently purchased a travel trailer and I’m worried about mice getting inside. I’m looking for advice on how to keep them out. I know that I need to make sure there are no openings where they can get in, but I’m not sure what else I can do. I’ve heard about using peppermint oil, but I’m not sure if that would work. I’m also worried about the smell. Are there any other methods I can use to keep mice away from my travel trailer? Any advice would be greatly appreciated. Thank you.