Jumping and nipping

I have a 5.5 month gsd that was jumping and nipping over the last 1.5 months. No one could help. I went to private trainers and watched many internet videos to try to find an answer. Then I found solid K9 and Jeff. He was talking about puppies and said to stop jumping use the “pet convincer”. I did and a major problem seems to be changed. He has been a different puppy.

Thank you so much for your advice and love of animals. You were the only trainer to advise trying this for a puppy and I spent weeks searching the internet and going for lessons to correct this problem. I wish I was near your facility to get lessons directly with you.

Sue George