This family from Thabazimbi had a break-in and the dog was hurt trying to protect the family/property, it was nervous of black bags afterwards. We did a private lesson with the family and the video below shows the improvement regarding the dogs fear of the bags
My mom has been working on the black bags. Ruby is now less scared of them. And bites and plays with them. So they are slowly getting better.
From what I understand the things my mom have worked on she is better. My mom can see slight improvements. So think she has learnt a lot from the lesson and is now applying it to the situation.