We use chicken wire (1/2 inch galvanized) below flower/veggie beds here for mole-proofing. We have really sandy soil and the wire seems to hold up fine. I suppose it depends on soil type, but I am sure the galv. wire would last a couple of seasons at least.
We are adapting chicken wire above and around our raised bed tomatoes. Getting the “doors” strategically placed is a challenge.
Damned tree rats just won’t give up !