My hounds are still barking, I keep bumping up the sensitivity on the NoBark SBC-10 collar from SportDog, and it is not really working. They still keep barking. I haven't found a good bark collar that stops the hounds from barking, and I've tried a collar from Garmin, too. I like the contact system on Garmin's, which uses plastic instead of metal and is easier on a dog's neck. Most of these collars work for a bit, and then they stop working at all. I guess I need to try the most expensive one I can find. Perhaps that one will work better.