if you don't move them far enough they will come back.
yes, i've read that it's not a great idea either. i much prefer what we are doing now (just ignore them and learn to work around them).
for the price of an electric fence we can eat a liftetime supply of sweet corn bought at the store. we just don't eat it that often where it matters much to me that we can't grow it here. i may change my mind in the future if i move or decide to do things differently here... until then, tally ho, it's just life as usual.