Big black ants

Those big black ants are generally not looking for your food. They are carpenter ants. They like to eat rotting wood. Google "carpenter ant bait". there are specific baits for them. Apply to areas where they are climbing up into the trailer (cords, tires, stabilizers, etc). Also make sure there are no tree limbs touching your trailer. They will use these as a bridge to get to the trailer. And ... they will fall off of branches above your trailer. Add some bait up there for those "dropping in" for dinner.

Some years ago I had a pop-up that got I infested with ants. They were eating their way through the roof insulation leaving styrofoam "sawdust" everywhere. I was able to completely eliminate them with a product called terro. It's a slow sweet poison that ants take to the nest and it slowly poisons the entire colony.

Not all "large black ants" are carpenter ants. We have them here in the northwest and most of them are not carpenter ants. Take one in to a local agriculture extension office if you have one close. They can identify it. I would not take one in to a pest control office. They will tell you the end is near.

I certainly would work to eradicate them as soon as possible. Have you seen any signs of sawdust in or around the trailer. That would be a sign that they are carpenter ants. Good luck.

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aftermath wrote:
Not all "large black ants" are carpenter ants. We have them here in the northwest and most of them are not carpenter ants. Take one in to a local agriculture extension office if you have one close. They can identify it. I would not take one in to a pest control office. They will tell you the end is near.

I certainly would work to eradicate them as soon as possible. Have you seen any signs of sawdust in or around the trailer. That would be a sign that they are carpenter ants. Good luck.

Yep, I keep forgetting we have all different kinds of critters across our great country. Here in PA, they are carpenters. I saw them carrying hammer and saws.

Indeed sounds like "Carpenter Ants" we own a pest control company in Texas.
Those little boogers think foam insulation is ice cream, I have seen MAny a rv infested with them . Previous posted suggested bait. It works very very well but not to fast. If you can find a product called Taurus or anything with the active ingredient fiprolil it is very lethal to them and many other ants. The do like food .and sweet stuff.
But mostly are looking to nest in wood that has been previously damaged by water or rot. Good luck with those little monsters ! Dont give up.

Terro ant bait.
Dust hidden areas with Boric Acid, also known as Croak-A-Roach. Neither works immediately, but will help to kill the queen and the nest.
Vinegar sprayed around will confuse them as they can’t follow any trails.

Oh, I also spray around everything that touches the ground with a deterrent found at the big box stores. I keep it in the camper to keep ants out while we are camping and while at home.

One thing to consider if it is carpenter ants is that they are attracted to rotting wood. We had some working their way into our house and eventually discovered that we had a leak in a shower and the wood curb under the tile was rotting. It could be a sign that your unit has a leak somewhere and wood rotting.