Barrier Protection against mice

[almendro]

I Have a problem with field mice or voles. (it could even be moles but I doubt it)

In the last few months several plants have had their stems eaten from below.

They ate my parsnips from the inside.

Then they had my swiss chard.

They have nibbled the outsides of the stems of my brassicas.

1 cabbage was eaten from the inside.

Today I found that my 1 year old ginormous artichoke has been eaten out of the ground from below.

I don't think it is moles because aparently they are carnivores.

I don't want to use poisons because the foxes and snakes who eat the mice would get poisoned by eating the dead mice.

The best thing I have seen on internet is embedding a wire mesh into the ground to a depth of about 30 centimetres around the plot.

Has anyone has experience of using these barrier methods of controling mice or moles?

[Two_Sheds]

The best thing I have seen on internet is embedding a wire mesh into the ground ... Has anyone has experience of using these barrier methods of controling mice or moles?

I seem to remember that mice can collapse their rib cages, so as to squeeze through the smallest hole: pencil-thickness. Any mesh would have to be smaller than that.
Pest Control Mice