The adjusting buckles on the collars don't hold letting the collar come loose, to where the contacts don't make contact. Warning beep is too low for humans to hear well. Easy to set up. Just plug in/charge collar. No batteries! Walk the perimeter and flag. ...
Just plug in/charge collar. No batteries! Walk the perimeter and flag. The only downside is that one of them decided to roll in something in the yard and trying to clean the collars was pretty tough. Seems to work okay, although one of the collars does not turn green after it has ...