Hello and thank you for taking the time to provide us with information about your dog's separation anxiety.
Please note that all members of the household are required to commit to aversive free methods during our time together. Aversive tools/methods include: shock, choke, prong, and barking collars. In addition to: shaking cans, collar corrections (pops), and slip leads. These methods are likely to hamper training, including the use of invisible or shock fence. Invisible fence causes fear, anxiety and aggression in many dogs, including excessive barking. Your dog must feel safe in order to overcome their anxiety!
If your dog presents with potential pain or extreme behavior, I may require a Veterinarian be seen in order to move forward with behavior modification. Health and behavior are linked. In many cases poor health (including toxic stress) must be addressed first in order to see the behavior change you wish for.