I am so sorry for the frustration this chewing is causing, and I really respect you for reaching out for help in finding a solution.
You sound like a very caring dog owner, and I think you have received some good advice. I don't have any specific advice to add, but wish you well in training your pup.
Only one of my dogs was a chewer, and mostly it was furniture, chair & desk legs. I sprayed the areas with "bitter apple" spray to deter her, and she eventually grew out of the habit around age 2. |