Has anyone ever tried cling wrap? I have heard of sandwiche bags, but that type of plastic will not easily mold into position. Why not carry a roll of cling wrap, set trap cut off a piece big enough to wrap the trap in. Will also put a barrier around entire trap to prevent frost from sticking jaws to ground.

If whatever pan cover you use is over both jaws of the trap it will suitcase your dirt covering the trap when it goes off letting the animal escape. I hope that makes sense. It’s kinda hard to explain….

Produce bags work very well. You put the whole trap in the bag and bed as normal. They will not "suitcase" your trap, or "let the animal escape".

We must have some different methods or situations because it suitcased every time that I tried it.

Cling wrap works. 30 -40 years or so ago, trappers wrote about it. It’s still used but there are other methods available.

Zagger’s method of suspending a trap, using a heavy pan cover and covering with grass; or any number of dry dirt/waxed dirt or coal shale coverings, or peat moss all lend themselves to covering the trap. All work and in experienced hands work well.

When I coyote trap, I use the Zagger method with a heavy screen pan cover. BUT like Zagger, I cut my pan covers long enough to go under the jaws.

You can also spray a 50/50 mix of glycol and water in the trap bed and around the edges. Then put your trap in. I tamp the edges of the dirt against the trap jaws AFTER I put the pan cover on. Then put the dried grass covering on. The trap doesn’t move until the coyote/big coon or fox steps on the pan cover.

I get it makes sense thankyou! Would need to use two separate pieces one under the trap and another covering the pan. I don't like waxed paper is really tricky to get the trap solid.

I have used the produce bags in Southeast Alaska, where freeze-thaw is constant, and wet, heavy snow turns to ice, then thaws, repeat. Or, the dirt freeze-dries, you chip a trap bed, place your trap and use dried moss or hemlock tips, and the frost pushes up from the ground, locking everything to the earth.
Produce bags will still catch marten trotting over a NO-BS Canine Extreme set for wolverine. Those extremely thin bags blow apart when the trap fires, and even a tiny marten foot doesn't get tossed out. Even a little #1 longspring set in a produce bag for mink, bedded firmly, will come out of the bag and make a proper catch.
Think about it...you can't even put an ear of corn stem-down in one of them without the thing falling through.