Thanks for the helpful info. The main reason I would get an E-collar is to ensure that he would listen to me when he was off leash. Mainly for safety purposes as we all know that even though our poodles are super-smart...they are still dogs. And dogs will be dogs. Hehe. Chasing rabits, birds, and what have you even if they are headed for a dangerous situation, they don't know any better. I want Cardi to have the freedom of being off leash when we are hiking, riding quads, exploring, lake trips, camping, etc. I would use it to give "leash corrections" with an invisible leash....sort to speak. Well, I have lots of time to think about it though. Again, thanks for the info.