In the never-ending quest to build a better mouse trap, we have this entry summarized by New Scientist:

A chocolate-scented mousetrap has been developed by UK scientists to catch the pests without the need for bait.

Contrary to popular belief, mice are more attracted to the scent of chocolate than the more traditional mouse-bait cheese, or other aromas like vanilla essence, according to Sorex Ltd, a manufacturer of rodent control products based in Cheshire, UK.

Let's hope they don't scale it up too large. I'd never see my wife or mother again!