Daryl

Foxes over here didn't learn the smell of Strychnine.

On the other hand, I know the farmer used Blood and chicken liver as well with it so it might have covered it up.

They love livers, heart and those internal organs.

One trick used to try to keep them dying in a certain area
was to bury some blood BELOW the bait, so after taking the bait they would dig down to the blood, increasing heart rate and keeping them in local.