When cats kill they cover what's left to hide it from others. Cover the bait up with leaves, etc. and leave a feather or two or small piece of fur showing. This gets their curiosity up and a small "trash pile" looks natural to a cat. Keep your bait fresh. This time of year I'd just use a little fish/tuna juice and feathers maybe. You don't have to have bait, he just needs to think there's something to eat under the trash pile. Cats are also very fond of beaver castor. Any trap supplier would have some, or text me and I'll send you a little. A dealer would probably also recommend a cat gland lure. Try the trash pile set and if it works you won't have to order anything. The dollar store will have something with feathers on it like cheap feather boas or a cat toy. Wouldn't hurt to hang a piece of feather or cat toy up in back of the cage or over a foothold set.