Last year we planted a corn field and we had issues with chipmunks/birds etc. It wasn't that bad and we successfully grew the field. This year the chipmunks are running out of control and destroyed the entire crop. Besides housing a dog or cat on the prmises what else is a sure way to get rid of these pests to stop picking on the corn. Can the seeds be soaked in something to not attract the chipmunks? How about mothballs

Thanks