5 mg crushed coumadin mixed into a tbsp of PB. Put out daily for 4-5 days. Keep out of reach of children and pets.
BTW, anyone have suggestions re purchase of a home pressure washer? Gas vs electric?
Don't waste the prescription quality Coumadin, it's too expensive. Just get some rat poison containing Warfarin (the two are chemically the same). The Warfarin is much stronger and will kill the critter faster. Then send someone in to retrieve the carcass or else you will have a big stink under the house.
or
Call Animal Control.
You live in the high tax, crypto-Socialist state of Connecticut. You may as well get some benefit from those high taxes you pay.