If you get several citronella camping candles and place them around your camper, you'll never have any bugs in the camper. You do not have to light the candles, just open them. Place them several places, near each door, at window locations, like .... maybe 6 to 8 of them in your camper. After a while, you'll not have any bugs inside. You may want to spray a bug killer to initially kill everything off, or use a bug bomb fogger to get everything first. But after that, the citronella candles will keep everything out!
We leave a couple opened all the time. We don't get bugs at all. After a while, the candles loose their scent. Just simply scrape the wax a little and they get revitalized!
Mosquitoes and other flying creatures won't even attempt to come in anywhere once that odor gets permeated through all the minuscule cracks and holes.
2019 Montana High Country 375FL
2014 Chevy Duramax HD 6.6 - 3500 Diesel Dully Long bed Crew Cab