[PennysMum]

My dog is actually better at COME when we are outside off-leash than she is in the house. We go to the dog park pretty often, and she'll listen to COME just fine there, but at home it is another story.

We used the long lead method to train her to come outside when we decided we wanted to be able to go off-lead at the dog park. We worked at it for several sessions, starting with a leash and increasing to a long length of rope. It really works well.