I had a armadillo problem a couple of years ago. It was bad. Tried lot's of things. Grub and insect killer helped. Shooting them didn't hurt, but I get sleepy. lol The thing that helped the most under the advice of others was, coyote urine and cayenne powder. I made little coyote urine bombs out of some water bottles and cotton balls. Spread them round the yard. Put the cayenne around the entrance to there yard condo. It worked for the most part. Draw backs are: Chasing a pack of coyotes around with a ladle!!! 😁
The reason I bring that up is. I wonder if that would work on those cats???