Why on Earth would you want to build an owl house? Having owls take up residence on your property will cause the mouse population to dwindle: never a bad thing if the furry invaders like to live in your basement, attic, or -- yikes! -- your kitchen.

To build a screech owl house, you'll need ten feet of one-foot board, some hinges, nails, and screws, wood glue, and a little time. Research shows that owls like big houses with small entrance holes, which is what inspired this owl house plan from Audubon. They suggest hanging your owl house ten feet off the ground or higher.

You are now on your way to a mouse-free house! Similarly, if you'd like to see a few less mosquitoes, try building a bat house. Apparently, those buzzing buggers are quite delicious....