Ken was able to do a follow up lesson with one of our dogs in particular with his nuciance barking. Harley is severely anxious and has separation anxiety he has also been on a number of different medications for it. Ken went through our old training techniques with us and also showed us some new tricks. In a 20 minute session Harley completely stopped barking when the doorbell rang. These reaults make me hopeful that with persistent training and regaining my strong leadership that he will over time settle down and feel less anxious and hopefully reduce his medications in the long term. Ken has made it clear he is always available for follow up questions and training, I was unsure how true the Bark Busters Guarantee really was when i first joined years ago but Ken demonstrates that no member of the Bark Busters Club will ever be left without help. I would highly recommend Bark Busters and if you're in the sydney area Ken is a knowledgeable and understanding trainer always willing to help.