Black flies entering trailer

[00boomboom]

I have a Rockwood 2012 8280WS. I had it parked at the farm for a month and would have 50-100 flies infiltrate the interior in a day. I think they were in the ceiling as I would find them in the lite fixtures, speakers, drawers and cupboards. I plugged propane vents, roof vent. Didn't matter if the slides were open or closed. Anyone else having this problem and any suggestions?

[Ford Idaho]

Stop parking it at the farm!





Check the roof for cracks.

I would try one of these.

https://www.google.com/search?q=fly+...&bih=749&dpr=1

[Great Horned Owl]

Are they full sized or are they smaller than the normal house fly? If smaller, they are probably drain flys that breed in your P traps. See Amico JQX-12F 2Z DC 12V 30A DPDT General Purpose Power Relay 8 Pin : Amazon.com : Automotive

Joel

[00boomboom]

No they are the larger black flies. They must be in the ceiling as they get in the lights and even the speakers. They pop out where there is a hole for wiring and I suspect the air conditioning vents. I had no problems with mosquitos getting in.