I know this has been asked before, but I can't find a good idea for keeping rabbits out of an entire half acre yard, not just a small garden. I let my dogs out tonight and usually they are running up and down the fence line about a bunny on the other side. But this time I found them cornering one and I had to drag them away.

Is there a certain type of noise they can hear that won't bother my neighbors at night I could try to ring to scare them off before the terrible two's go out? Or would I have to go to the extent of doubling up my fence with smaller hole wire fencing?