[yorkiemini]

A basic obedience class would probably help the pup to learn behavior that he would get positive reinforcement for.

I briefly tried the water bottle thing with my Cali when she attacked the TV barking and it freaked her out! She had only had positive reinforcement prior to that. She did not perceive the squirt as positive!

I went back to the obedience tenet of "leave it" and distraction. That worked well for her. Dogs are different just like people so there is no one size fits all.

Obedience also teaches a dog to listen to the handler which gives you a good start!

Wishing you good luck as you navigate this issue!