Worth every penny
2.5 year old rescue German Shepherd who would bark at anything and everything going past the house at 530am when I left for work. Tried a spray collar (useless) with zero success. Fitted this collar but I couldn't test it on her while I was home (because she knows not to bark when I'm home) so I didn't know how high to set the collar. I ended up setting it to 6 and set up the gopro to film the results after I left for work. WHACK! Into the kennel for the rest of the morning. The first three days she was all weird and timid because she didn't really know what was going on but after 3 days she was fine and nobody heard a thing out of her. Success. Worth every cent, fixed my dog immediately. Highly recommend.