max99

Help!!! I adopted a BC named max about 6mo ago. He is about 2 1/2, and constantly barks while outside(and I mean constantly!) I have tried everything...daily walks, lots of playing, having him sleep inside with us, banging pans(got that one from a book),a muzzle (which neither of us liked,nor did it work) NOTHING WORKS!! He is a great dog otherwise, but he is driving everyone crazy. Any suggestions???