Without looking, I can only guess what I have stored forward of the wheel wells:
Paper towels (I start my travels with close to a case of trifold), toilet paper, dirty clothes, extra shoes/boots, tools, electric space heater, extra rope and bungie cords. The first couple of years I traveled with a gap of about 3" between the truck sides and camper. Rain did not make it into the storage area, but I did have insects and even small rodents. I have since sealed the area with dense insulation foam. I think it helps keep the camper warm and keeps the critters out. I usually also throw a couple of moth balls into the space, just in case.
