Make a trap out of a five gallon bucket with about six inches of water in
it. A couple of strips of metal hooked up to a fence shocker works good.
Make one strip a ground, and the other a little higher with the peanut
butter on it. When they make a circuit, they zap and fall into the water
For a simpler approach, thread a tin can on a piece of wire just down from
the lip. Put a couple of strips of lath or sheetmetal out so they can reach
the can. Put peanut butter on the can. When they step out, the can rolls,
and splash. Another way is to sprinkle seed on the top of the water, and
they jump in thinking it's all seed. The seed becomes water soaked quickly,
so you need to replace often.
Check daily, or the little darlings get to smelling really skanky really