Rodents are a problem anyone who feeds birds is likely to encounter.

What happens when you poison 4 or 5 rats and they die in some unreachable
spot under your house? Something died under my house three years ago and I
had to install an exhaust fan in the foundation to get rid of the smell.
Since it was mid winter my heating bills skyrocketed for several weeks.

If anyone has experience with traps, I'd really appreciate your advice.

John Shelton
Portland, Oregon
johns at ohsu.edu