Ode to Noise Maker

Click, clack, scratchy, scrape...
No sleep, I'm completely awake!
Mind wonders...what is that?
A bird, a cat? Or maybe a rat?
Check the roof, nothing outside.
This is NOT my kind of surprise.
Wake up Larry, what's the matter?
Point to the roof, show him the ladder.
Up, up, up he climbs,
Nothing is found committing the crime.
How about a trap so we can catch,
We've got brains we're no match!
Close up ceiling, turn off the light.
I'm hoping that we'll win this fight.
But again I hear that scratch and tap.
Frustration! O' CRAP!!!