On Mon, 02 Dec 2013 20:35:24 -0500, Stormin Mormon wrote:

I'm thinking mice. D-Con works here.

I'm thinking mice also (but I really do not know).

Those droppings are only about 1/4 inch long.

Googling, I found this nice fact sheet which shows the
difference between single-dose and multiple-dose rodenticides:

http://www.epa.gov/oppsrrd1/REDs/fac...s/2100fact.pdf