Had 48 babies and adult chickens in the coop last night. SOMEONE forgot to shut the little chicken door. 6 alive this a.m. Don't see much wrong with most of the dead bodies laying around the yard this a.m. so am guessing they died from fright. Sigh. Soooo, trying to trap tonight but am wondering about any ultrasonic deterrents out there. Can anyone speak highly of anything other than killing/trapping preditors?? I don't see any posts on any such item. I see McMurry sells one but wondering if anyone has tried it??