The square bales need to be tightened-up with metal bands or something before they're of much use for archery. Our club has a machine someone built a long time ago that compresses the bales and then we band them while they are compressed. Even then, they need to be replaced every year or so. I put some in my yard some years ago, that I compressed myself using turnbuckles and wire cable. They worked for a couple of years until they started to deteriorate, and then they were a mess for a few years after that. I kept raking them out and eventually they disappeared into the ground. I only use foam targets now, either backed up by other old targets or plywood. Backing them up with plywood encourages you not to miss, because when you do, you will have a job digging out the points from the plywood.