Pants the adventurer part 2

My husband bought a rat trap and set it with a small piece of cucumber which is one of Pants' favorite foods. The next morning, the door of the trap was shut but he wasn't there, although the bait was gone. We considered how to catch him and my husband had a good idea that was putting the tubular part of his cage under the floor with baits and hope he goes back in the cage. We tried to do it this way for couple of days but he didn't come back home even though the bait was gone.