You make it to the trap door and open it. You climb down the ladder into a damp, cellar.
There is a door in front of you, but it is guarded by hungry rats!

You need to distract those little guys somehow. Too bad you left the snacks for the party in the car. You could've really used them now.
The cellar is completely empty; not even a mop or broom to bat the rats away. That only leaves one option.