I don't know if this will help you but it has stopped my girls from barking when all others failed. It is called Pet Corrector and it is merely canned air and you do a small blast (not directly at them) but so they can hear it. It seems they have a natural aversion to the hissing sound it makes and has worked great for me.
__________________
"I do not at all understand the mystery of grace-only that it meets us where we are but does not leave us where it found us"-Anne Lamott |