Some of the shock collars work from vibration, some have a little microphone. For one, Sarah is separated from the dogs at all times. Their dog runs are on seperate sides of the yard. My yard is U shaped, so they can't even see eachother. The training videos say to be with your dogs when you initially put them on and to slowly increase their time in the collar. It isn't a slap on fix all solution. Some people think they can just throw a shock collar on their dog and toss them in the backyard and the problem is resolved. It doesn't work that way at all. Shock collars are meant to be a training aid, not a bandaid.

The shock collars that I had for Dusty and Rosco were for large dogs...I tried them myself. The shock isn't painful at all...it is just startling enough to change their mindset.

But don't worry, Aly...I am not going to run out and buy one anytime soon. That is my last resort. I still have alot of time to work with her before I go back to work.