Here is the trap. I smear chunky peanut butter on the board and on both sides of the trigger pan inside. Then I throw some sunflower seeds around to bring them in. Supposedly squirrels are attracted to enclosures like this.
I don’t think the smeared peanut butter will go anywhere if hung vertically.
I drilled a hole on both ends of the board (shown in the foreground of the picture) for mounting when releasing the prey . You’ll see one screw in the side edge of the board around the middle and there is also one on the other side. That is where I hang the grocery bag (when hung vertically) so that when I pull the snare back the squirrel just falls right in the bag.