There is an old saying among firefighters: “No firefighter has ever seen a cat skeleton in a tree”. My philosophy is : “If they got up there, they can get down”.
We had moles. I went to the dermatologist to see if he could get rid of them, but he wouldn’t. I ended up using Milky Spore to kill the grubs that the moles were eating.
Ivan Pavlov’s name rings a bell.