I have a brand new fifth wheeler with a brand new truck, and thought that I had scouted out, read, and planned for anything that could happen on our first "shake down" trip. Guess what? The smallest thing that one could imagine made our trip miserable ...... ants! It's a new rig, and we had all food in containers, so nothing attracted them. They just decided to go along with us for the ride! What do you experienced people do to prevent this? Spray inside or outside with a long lasting insect killer? And what do you use, and where do you put it? I trying to learn to be a "pro", but those "little things" keep crawling into your perfect plans.