I just realized that the second variation of my funnel/one-way-door mousetrap doesn’t really trap mice at all!

Since it is specifically designed to provide an avenue of escape to the mouse, there’s no trapping being done, and I may have just miserably failed the design challenge.  The challenge specifically states that the winning design is the one that first catches his mouse.

Plus, this particular design would require you to drill a 4cm hole and 4x 3mm holes in a door.  I’m guessing this is one of those “cure is worse than the disease” solutions.