I accidently found a pretty good mouse trap this winter. I
use water and fermented honey in a gallon milk container
(about 1/3 full) to catch yellow jackets in the fall. They work
well catching the yellow jackets and the bees pretty much
ignore the traps. This winter I neglected picking one up
and had left it next to a hive. Late in the winter I noticed
that 3 mice had drowned.
I've no idea how well it works, but I intend to be lazy this
next year and leave them out just to see.
-Tim