On our last campout we got two flies that came in while entering the HiLo. Then a wasp came in DH couldn't kill it so he used the fly swatter to shoo it out the roof escape vent. Knock on wood no issues when we have old faithful in storage.

The fly's we can tolerate. They are easy to get rid of. It's the buzzing mosquitoes late into the night that drive us nuts.

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Fantastic Wife
2005 Toyota Tundra V-8 4.7L
2705T Tow Lite
1999 21T Tow Lite

My Old Faithful = 12 Ga. Stoeger Coach. An alternative is DEET.

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2014 Ford F250 6.7 PS
formerly a HiLo TD2401
now an 08 Jayco Eagle