I occasionally have these type of nocturnal visitors. They are indeed clever. I have had good luck with spring traps but it took some time to find the right bait.
The best bait seems to be a combination of peanut butter (smooth) sprinkled with bird seed. Also you must keep the bait fresh; change it out every two-three days. Clean the trap with water only; don’t use dish soap or any type of scented cleaner.
Next always try to put the trap in the same place. They are suspicious of changes in their hunting area. If the trap is always located in a similar location, they will eventually try the bait.
Finally dispose of any carcass well away from where you place the trap.
Finally dispose of any carcass well away from where you place the trap”
Mr Mercat gave it an air burial. Threw it on top of the roof.