Last weekend we started training Petey with the invisible fencing at Glens house. Glen put the collar on Petey and walked him around the perimeter to train Petey where his boundaries were and also so Glen could adjust the collar to the appropriate level.
Petey loving being leash free.
The collar softly beeps when the dog is at the boundary before it shocks. Naturally, Petey learned the hard way about the beeps. The second time he heard it he immediately turned and ran back for the house.