Wow Sue, Im impressed! You really know your stuff! Thankyou so so much for all of your information, it was a fascinating read, and Ill be sure to try out what you have suggested. You have done a great job at explaining clearly what my dog needs. He knows the word NO, as this I used whe he was a pup, and I used to clap really loudly at the same time, so I think its back to basics, and see what I can do. I will disinfect the area first to get rid of the scent, and go from there.
Thanks again for your great advice