Jim Yanik wrote:

WTF do you think a fence will stop a burrowing animal for more than,
oh, maybe a minute and a half?

you -bury- the bottom foot of the fencing.

Won't work - at least according to the Secretary of Homeland Security.

She is on record as saying "Build a 15-foot fence and I'll show you a rabbit
that can dig a 16-foot hole."

Or something like that - she goes on to discuss mayonnaise if I recall
correctly.