The PetGentle we bought has absolutely no effect on the beautiful and intelligent 3 year old German Shepherd we recently acquired from the Tri County Animal Shelter outside Edenton, NC. She totally ignores it, and just keeps on barking whenever, out walking, she sees a cat or a small dog; or a vulture flying over our yard.
Wish we had seen more reviews to warn us off from wasting money on it.
Highly recommend a red rubber toy, called a Sumo, which is the only thing she has not destroyed: found it in Walmart - got the largest size. She also likes playing tug of war with a branch knocked out of a tree by a storm.
Reason of review: not effective as advertised.
Monetary Loss: $40.
Preferred solution: Let the company propose a solution.