If I were parking for such a length of time in such an infested area, I think I'd be getting some hardware cloth and doing my best to completely enclose the generator from below, or any other openings...maybe even going so far as to underpin the entire coach perimeter (like a fence tight to the sidewalls and all the way to the ground)
for sure I'd be putting lots of bait stations and traps all around...and even logical areas away from the coach if applicable...such as nearby walls or fence lines, etc...
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