According to Rentokill, the best bait for a mousetrap is not cheese but chocolate. I beg to differ. The best bait for a mouse trap is actually laxative chocolate. Should the cunning vermin manage to remove the bait without springing the trap, the game isn't necessarily over. You can simply track your unfortunate foe by following the unholy trail until you stumble upon your prey, who by this time will probably be bent double with eyes bulging, begging for you to end it.
At this point, I favour a shovel as my chosen weapon of mass destruction.