True. Hips probably identified the best add-on for my current 4' fencing with the 2' tall 1/2" square holed crap. If I had a teenager who wanted to make some $$ I'd pay them to dig a trench all the way around so I could ruun the stuff below into the ground 1/3-1/2 meter.
That was my next suggestion. Run it into the ground a foot and then horizontally out away from the fence a foot.
Yes this involves digging a 12" x 12" ditch and then filling it in again. I did that around an 8' x 12' chicken enclosure with a pick and shovel. Took longer than expected. Getting old sucks.