That's normal. Re-bait the trap and keep trying. Use
Skippy Super-Chunk peanut butter and jam the chunks in.

Jack wrote:
And this particular meece is smart; he won't touch the d-con pellets.
Also, he was able to eat the peanut butter on the mouse trap, without
tripping the trap. Two consecutive nights. Is this a Super Meece?
What to do, what to do??