I second the squirt bottle. I am a new convert to that method. I didn't think it could squirt the distance I need but sure enough, so far it works like a charm! My crew barks when it is rotation time so now they get squirted and they hush. I tried covering them up and a "no", but with no success, now they get squirted. I am actually pretty amazed because the squirt bottle I have will spray about 4 feet! so it works and the dog I rotate out sits calmly while I squirt the barking ones.
APBT or AMBULLY the BSL doesn't discriminate. HSUS kills both.
If it has teeth it will bite and if it has hooves it will kick