For what it's worth, Bryan. This from farmers in upstate NY, Sheldon's
area... Groundhogs dig a network of tunnels with several openings. They
kill the groundhog and put it back into an opening and fill in the hole
with dirt.
The rotting groundhog smell fills the tunnels and prevents other
groundhogs or animals from moving in. That's the common belief anyway.
I visited my inlaws at the end of the summer of 1979 and shot his
annoying groundhog that was eating up his garden. I thought we might
cook it but he stuffed down the nearest hole and covered that up with dirt.
This was in Galway, NY. A very small town...only a crossroad that
had the name.