Our golden retriever stays in our yard with an invisible fence. She barks at dogs and people who walk by. Any thoughts?

As long as your dog has a clear understanding of the invisible fence system and respects it, I would think you could now add a bark collar as well. Basically, you are just adding more rules for being out in the yard which now include NO barking.

Does she bark in the house too, or just in the yard? If she barks in the house when people walk by then I would use the bark collar at first in the house and let her get the idea that barking is no longer acceptable. Dogs are smart and they figure these things out quickly. Once she has experienced the collar in the house, I would then put it on when she goes out in the yard too but I would supervise her at first. ( Just in case the correction from the collar spooks her and she would want to leave the area).

Cindy