Aye, that was my first thought, but I'm a while away from an onion harvest, if it does indeed turn out at all. (would be nice if it did, yes, it would...)
I am about to put a WANT for those on free cycle. I need them to keep the squirrels from eating my pumpkins. Last year I did not get a single pumpkin despite huge, healthy vines. Any time a baby pumpkin popped up the squirrels nabbed them. Vfem gave me this idea.
I am sure they can bite through them, but I think the tangly mesh annoys them and they move on. I am willing to give it a try since I don't have any cast iron pumpkin protectors handy