Advice needed to sort a problem

[Milkybarkid]

Borrow a couple of Jack Russels for the day and let them find the nest, Then stand by with guns, spades, big sticks.Etc...

[Meater]

Liquidised cat food worked best for me, but anything smelly and liquidised is good, you may need to feed it/them for a while until they get more brave getting it. If you put it in a container for them to lap at, be sure to pin down the container, I did it without, and it dragged the whole container off. I got it next time though

A small liquid bait trail to the main bait works well too.