I have a sonic sound remote?? it basicaly lets go of a sound that only dogs can hear and it gets their attention...and it is a remote so I can push it whenever I want to. no collor involved?? there is quite a few difference of opinion on this though. I only use it maybe once a week I willl not use it if she barks once to let me know about something. I will only use it is if she is barking excessevly for no reason.
http://www.yorkietalk.com/forums/tra...-repeller.html
above is a YT discussion and opinions on it.