Opossum problem?!?!?

[Fuddy1952]

I have a problem with "possums" getting in a pen. I have two 12ft x 12ft pens, they're 8ft tall, 3ft apart. Concrete pad, chain link fence securely attached on sides, steel roofs. The chain link doors face each other, concrete sidewalk between.
They're for our 3 outdoor cats. Overhead tunnel for them, even an insulated heated (winter) room overhead.
Every everything at dusk I hear a good pan banging...I know it's a possum. I've gotten three out in last week. I put them in a cage, release them miles from nowhere. I don't want to shoot them...messy and it would probably damage pens.
Now my question...I can't understand how they get in! Cats cannot get out. Doors have maybe 1.5" gap if that (can an adult possum squeeze through that?).
I have a have a Hart trap, and have trapped them outside...(but skunks too!)
My question is I can't see how they could get through chain link fence...can they?
Worst part is one (4th) 13y.o. cat had to be euthanized yesterday (got sick, been to vet several times, vet said no connection with possums...cat had lots of tests, it was liver cancer).
Thanks in advance any thoughts, advice appreciated. Few pictures...it's dark outside but enough to have idea. Blue&green are tarps I started zip-tying on outside to cover chain link.

 

[Bilko]

I’m guessing they are not but will ask. Are the eves open?

 

[W8BYA]

My guess would be the roof/wall interface someplace. I have seen them walk right up a chain link fence like nothing or 6x6 posts outside the stalls. If all else fails set up a camera to record for a day or two or even spend 3-4 hrs outside the pen quietly waiting and watching. They get real active several hours after sunset until around 3 AM here.

 

[bcp]

Possum goes through chain link---How small of a hole can a possum fit into? | BackYard Chickens

Bruce

 

[Alan W.]

Run an electic fence wire at the base. Will keep them out. Them critters love cat food.
Must be a gazillion of them around here based on the amount killed on our road.

 

[Fuddy1952]

I’m guessing they are not but will ask. Are the eves open?

No. Chain link. Eves are pressure treated. No opening.

 

[D2Cat]

I think they could squeeze in around that gate.

You could put you live trap in there with cat food in a tin can for bait. If one of your cats goes in and sets the door shut leave the cat in there for 1/2 a day. They will not venture in again! Easier to get the possum that way.

If you catch a skunk simply walk up slowly and drop a piece of carpet or better yet an old sheet to cover the trap. You then can pick up the trap (covered of course) and carry it out to your truck to haul. When you get to where you release the critters just stick a screw driver or stick in the side of the live trap to keep the door open. He'll skoodly pretty quickly.

 

[stuckmotor]

I've been trying to think of some non-hazardous, non-messy substance you could sprinkle around the fence so you could see where the possums were coming in. I finally came up with sand then I remembered what cats do in sand.

 

[beowulf]

Actually, possums can be useful. If you are lost in the woods and you see a possum, you can follow it and it will lead you to a road as possums know where all the roads are.

Or, you can have this guy come to live with you.

https://www.tractorbynet.com/forums/attachment.php?attachmentid=577316&d=1541262763

 

[nybirdman]

Electric fence with a dawn/dusk timer is what I use for ground predators.Odd thing something was eating a lot of rat poison;later found out that it has no effect on opossums.Havaheart traps or leg holds.

 

[mapper]

I found out recently that feeding cats only once or twice a day and removing the food as soon as they are done is much better for their health. It emulates the way that they would naturally eat if hunting for their own food. This method would also eliminate the source of attraction to the possums.
Started this regime with our young cats, they really look forward to breakfast now!

 

[dragoneggs]

I found out recently that feeding cats only once or twice a day and removing the food as soon as they are done is much better for their health. It emulates the way that they would naturally eat if hunting for their own food. This method would also eliminate the source of attraction to the possums.
Started this regime with our young cats, they really look forward to breakfast now!

Honestly, that is the only way we ever fed our cats.