i really need to speak with someone who has used an e-collar as a training aid, i am considering hiring one and believe they are very successful when used correctly, however i am also aware that they can cause problems if used wrongly...question is how do you ensure you are using it correctly? and how long do i need to hire one for?

Guest, please register and I am sure people will be only to happy to answer your questions.
It would also help to know what breed you have and what problem you are trying to correct, but you need to register to answer these questions :-)