I have 2 females in heat and 3 males that are driving my wife and I crazy. Any recommendation on Bark Collars? I want the best and most reliable. I have had 3 and my dad has had 2 tritronic bark limiters and all of them have done the same thing. Eventually you can't get the on off button to work. I have talked to Tritonics 2 times and they say send them the collars with $79 each and they will send me a new one. Why would I want to pay again for equipment that should last longer than 6 months when they hadn't fixed the issue? Any suggestions?